-
-
-
-
Selection switch
-
Patent number 4,506,122
-
Issue date Mar 19, 1985
-
Mitsuku Denshi Kogyo Kabushiki Kaisha
-
Muneyoshi Miyata
-
G11 - INFORMATION STORAGE
-
-
Tape recorder
-
Patent number 4,409,634
-
Issue date Oct 11, 1983
-
Olympus Optical Company Limited
-
Ryoichi Sawaki
-
G11 - INFORMATION STORAGE
-
3668343
-
Patent number 3,668,343
-
Issue date Jun 6, 1972
-
G11 - INFORMATION STORAGE
-
2579464
-
Patent number 2,579,464
-
Issue date Dec 25, 1951
-
G01 - MEASURING TESTING
-
2547009
-
Patent number 2,547,009
-
Issue date Apr 3, 1951
-
G01 - MEASURING TESTING
-
2520251
-
Patent number 2,520,251
-
Issue date Aug 29, 1950
-
G11 - INFORMATION STORAGE
-
1872706
-
Patent number 1,872,706
-
Issue date Aug 23, 1932
-
G11 - INFORMATION STORAGE
-
1741465
-
Patent number 1,741,465
-
Issue date Dec 31, 1929
-
G11 - INFORMATION STORAGE
-
1438000
-
Patent number 1,438,000
-
Issue date Dec 5, 1922
-
G11 - INFORMATION STORAGE
-
1259699
-
Patent number 1,259,699
-
Issue date Mar 19, 1918
-
G11 - INFORMATION STORAGE
-
1211110
-
Patent number 1,211,110
-
Issue date Jan 2, 1917
-
G11 - INFORMATION STORAGE
-
1001830
-
Patent number 1,001,830
-
Issue date Aug 29, 1911
-
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
-
967276
-
Patent number 967,276
-
Issue date Aug 16, 1910
-
H04 - ELECTRIC COMMUNICATION TECHNIQUE
-
496191
-
Patent number 496,191
-
Issue date Apr 25, 1893
-
G11 - INFORMATION STORAGE