US2695547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal and searchlight shutter
Assignee: Individual
•
Filing: 1951-05-21
•
Granted: 1954-11-30
•
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 16:56
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)
US363961A
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US564216A
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US622592A
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DE145986C
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US993431A
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US1153319A
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US1469763A
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US1865078A
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US2356178A
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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 |