US2481082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Television camera lens switching device
Assignee: Individual
•
Filing: 1945-06-04
•
Granted: 1949-09-06
•
Expires: 1965-06-04
Abstract
No abstract record available.
Inventors
- 👤 Thornton W Chew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:51
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/18; H; H04; H04N; H04N23/00; H04N23/50; H04N23/55
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1326379A
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US1275249A
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US1525741A
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US1795626A
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US1854132A
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US1873571A
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US1967468A
Cited
US2120654A
Cited
US2153198A
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US2377954A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |