Patent US2969960A successfully refreshed from Google Patents.
Patent US3590682A successfully refreshed from Google Patents.
US3590682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Albada viewfinder including prismatic reflecting means defining an image
Assignee: Eastman Kodak Co
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Filing: 1967-06-21
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Granted: 1971-07-06
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Expires: 1987-06-21
Abstract
Abstract A brilliant reflective reticle frame for limiting the viewing filed in an Albada viewfinder is disclosed, which is defined by a highly reflective surface of a plastic support member.
Inventors
- 👤 Carl Ort
- 👤 Kurt Deininger
- 👤 Alfred Kilgus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:44
CPC Classifications
G; G03; G03B; G03B13/00; G03B13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A reflective frame adapted to frame a viewfinder image field in an Albada viewfinder system, said frame comprising: a plastic support member having an optical aperture, said aperture being optically aligned with the viewfinder system; and prismatic reflecting means integrally formed on the support member defining a reflective reticle, said reflecting means generally enclosing the optical aperture through the support member.
Claim 2
Dependent Claim
61 words
A reflective frame adapted to frame a viewfinder image field in an Albada viewfinder system, said frame comprising: a plastic support member having an optical aperture, said aperture being optically aligned with the viewfinder system; and prismatic reflecting means integrally formed on the support member defining a reflective reticle, said reflecting means generally enclosing the optical aperture through the support member.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |