US2481054A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light projector
Assignee: Individual
•
Filing: 1944-07-24
•
Granted: 1949-09-06
•
Expires: 1964-07-24
Abstract
No abstract record available.
Inventors
- 👤 Wendel Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:40
CPC Classifications
F; F21; F21S; F21S8/00; F21W; F21W2111/00; F21W2111/06; F21W2121/00; F21W2121/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US465516A
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US483482A
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DE541952C
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DE424862C
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US1790086A
Cited
US1718560A
Cited
FR657846A
Cited
US1792398A
Cited
US1839994A
Cited
US1895887A
Cited
US1973132A
Cited
FR797767A
Cited
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 |