Patent US2534083A successfully refreshed from Google Patents.
US2534083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projector
Assignee: BRADFIELD AND BIDWELL Inc
•
Filing: 1946-04-18
•
Granted: 1950-12-12
•
Expires: 1966-04-18
Abstract
No abstract record available.
Inventors
- 👤 Broek Jan A Van Den
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:09
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1210955A
Cited
US1350548A
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US1879600A
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US1824519A
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US1874953A
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US2008982A
Cited
US2113578A
Cited
US2177638A
Cited
US2165419A
Cited
US2231765A
Cited
US2279463A
Cited
US2377476A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |