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1307205
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Information
Patent Grant
1307205
References
Source
Patent Number
1,307,205
Date Filed
Not available
Date Issued
Tuesday, June 17, 1919
105 years ago
CPC
G01C3/24 - using a parallactic triangle with fixed angles and a base of variable length in the observation station
G02F1/1335 - Structural association of optical devices
US Classifications
356 - Optics: measuring and testing
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