-
Bass-reflex loudspeaker
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Patent number 5,696,357
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Issue date Dec 9, 1997
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Polk Investment Corporation
-
Bradely M. Starobin
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
-
-
Bandpass woofer and method
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Patent number 5,475,764
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Issue date Dec 12, 1995
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Polk Investment Corporation
-
Matthew S. Polk
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H04 - ELECTRIC COMMUNICATION TECHNIQUE
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Edge surround for speaker
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Patent number D357480
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Issue date Apr 18, 1995
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Polk Investment Corporation
-
Stuart W. Lumsden
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D14 - Recording, communication, or information retrieval equipment
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Speaker
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Patent number D351839
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Issue date Oct 25, 1994
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Polk Investment Corporation
-
Keith A. Ballard
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D14 - Recording, communication, or information retrieval equipment
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Combined speaker and integral stand
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Patent number D351388
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Issue date Oct 11, 1994
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Polk Investment Corporation
-
Keith A. Ballard
-
D14 - Recording, communication, or information retrieval equipment
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Enclosed speaker for vehicle use
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Patent number D350135
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Issue date Aug 30, 1994
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Polk Investment Corporation
-
Matthew S. Polk
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D14 - Recording, communication, or information retrieval equipment
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-
-
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74696817 - SPEED MATCHING
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Serial number 74696817
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Registration number 2111097
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Filing date Jul 3, 1995
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Polk Investment Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74696819 - PERFORMANCE WITHOUT LIMITS
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Serial number 74696819
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Registration number 2037866
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Filing date Jul 3, 1995
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Polk Investment Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74696818 - CASKET BASKET
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Serial number 74696818
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Registration number 2051479
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Filing date Jul 3, 1995
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Polk Investment Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74685462 - EOSON
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Serial number 74685462
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Filing date Jun 7, 1995
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Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74685460 - EOSONE
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Serial number 74685460
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Registration number 2016512
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Filing date Jun 7, 1995
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Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74676001 - HIGH VELOCITY COMPRESSION DRIVE
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Serial number 74676001
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Registration number 2009655
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Filing date May 17, 1995
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Polk Investment Corporation
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9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74667726 - RADIANT SURROUND
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Serial number 74667726
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Filing date Apr 28, 1995
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Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74638422 - RADIANT SURROUND FIELD
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Serial number 74638422
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Filing date Feb 27, 1995
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Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74619362 - BIG SPEAKER SOUND WITHOUT THE BIG SPEAKER
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Serial number 74619362
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Registration number 1948714
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Filing date Jan 9, 1995
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Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
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74614102 - SIGNATURE REFERENCE THEATER
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Serial number 74614102
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Registration number 2112626
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Filing date Dec 22, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74614098 - SRT
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Serial number 74614098
-
Filing date Dec 22, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74575805 - ENCORE
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Serial number 74575805
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Filing date Sep 20, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74513973 - WAY COOL
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Serial number 74513973
-
Filing date Apr 18, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74501867 - VDA
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Serial number 74501867
-
Filing date Mar 18, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74501868 - STEREO DIMENSIONAL VIDEO
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Serial number 74501868
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Filing date Mar 18, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74501869 - SDV
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Serial number 74501869
-
Filing date Mar 18, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74477850 - VIDEO DIMENSIONAL ARRAY
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Serial number 74477850
-
Filing date Jan 12, 1994
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments
-
74258747 - DYNAMIC BALANCE
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Serial number 74258747
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Registration number 1821979
-
Filing date Mar 24, 1992
-
Polk Investment Corporation
-
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments