Patent US4580568A successfully refreshed from Google Patents.
US1694833A
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US
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Adjustable reflector frame
Assignee: WEIGHTOGRAPH Co
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Filing: 1926-03-04
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Granted: 1928-12-11
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Expires: 1946-03-04
Abstract
No abstract record available.
Inventors
- 👤 Louis S Shively
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:51
CPC Classifications
F; F21; F21V; F21V7/00; F21V7/10; G; G02; G02B; G02B27/00; G02B27/62
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-12-11 | 1932-06-11 | 1932-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-12-11 | 1936-06-11 | 1936-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-12-11 | 1940-06-11 | 1940-12-11 | $7700.00 | Window Closed / Lapsed |