Patent US3692292A successfully refreshed from Google Patents.
Patent US2921183A successfully refreshed from Google Patents.
US2921183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power actuated dirigible spotlight
Assignee: FENN
•
Filing: 1956-04-05
•
Granted: 1960-01-12
•
Expires: 1976-04-05
Abstract
No abstract record available.
Inventors
- 👤 Lawrence E Fenn
- 👤 Herbert G Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:32
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/24; B60Q1/245; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20207; Y10T74/20366
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1012457A
Cited
US1542259A
Cited
US1833308A
Cited
US2014454A
Cited
US2049802A
Cited
US2226053A
Cited
US2410365A
Cited
US2557784A
Cited
US2778241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |