Patent
Suchergebnisse für: Barrett
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Patent:US1000363
15.08.1911 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Actuating device for key set calculating machines
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Patent:US1003086
12.09.1911 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Key set calculating machine
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Patent:US1003414
19.09.1911 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Rotary retarding mechanism for adding machines and like devices
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Patent:US1017843
20.02.1912 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Transfer mechanism for calculating machines
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Patent:US1023235
16.04.1912 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Calculating-machine
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Patent:US1108118
25.08.1914 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Actuating device for key set calculating machines
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Patent:US1108119
25.08.1914 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Item-counter for calculating-machines
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Patent:US1130463
02.03.1915 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Operating-handle for adding-machines
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Patent:US1173640
29.02.1916 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Auxiliary keyboard for calculating machines
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Patent:US1326564
30.12.1919 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Computing and recording machine
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Patent:US994238
06.06.1911 Barrett, Glenn (P) Barrett (P) Adding Machine Co. : Transfer mechanism for adding machines