Patent US1745117A successfully refreshed from Google Patents.
Patent US2695547A successfully refreshed from Google Patents.
US2695547A
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Signal and searchlight shutter
Assignee: Individual
•
Filing: 1951-05-21
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Granted: 1954-11-30
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Expires: 1971-05-21
Abstract
No abstract record available.
Inventors
- 👤 Otto J Zander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:57
CPC Classifications
F; F21; F21V; F21V11/00; F21V11/08; F21V11/10; F21W; F21W2107/00; F21W2107/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1153319A
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US2553622A
Cited
GB647931A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |