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Patent JPS52137331A successfully refreshed from Google Patents.
JPS52137331A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Optical system of variable magnification finder
Assignee: Minolta Co Ltd
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Filing: 1976-05-12
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Granted: —
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Expires: 1996-05-12
Abstract
Abstract PURPOSE: To change the magnification with no change of visibility by shifting a finder optical system along its optical axis, and rendering a portion of the optical system to go forward and backward along the optical axis. COPYRIGHT: (C)1977,JPO&Japio
Inventors
- 👤 Yasuo Yamazaki
- 👤 Taizo Kawaguchi
- 👤 Kazuo Kimura
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-10-31 16:23
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; G03B19/07
Claims Analysis
Total Claims: 0
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