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JEFFRIES, INC.
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WARREN, MI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Switch apparatus including a pair of beam-type switches
Patent number
4,939,358
Issue date
Jul 3, 1990
Jeffries, Inc.
Jeffrey G. Herman
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73625271 - BREAK-A-BEAM
Serial number
73625271
Registration number
1443980
Filing date
Oct 8, 1986
JEFFRIES, INC.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments