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2197867
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Information
Patent Grant
2197867
References
Source
Patent Number
2,197,867
Date Filed
Not available
Date Issued
Tuesday, April 23, 1940
84 years ago
CPC
H04L17/28 - using pneumatic or hydraulic translation
G06G5/00 - Devices in which the computing operation is performed by means of fluid-pressure elements
US Classifications
178 - Telegraphy
091 - Motors: expansible chamber type
092 - Expansible chamber devices
101 - Printing
235 - Registers
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