Patent US3540392A successfully refreshed from Google Patents.
Patent US2476797A successfully refreshed from Google Patents.
US2476797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic slide projector
Assignee: PICTURE RECORDING Co
•
Filing: 1946-02-21
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Granted: 1949-07-19
•
Expires: 1966-02-21
Abstract
No abstract record available.
Inventors
- 👤 Frank P Bennett
- 👤 George E Musebeck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:34
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/04; G03B23/042
Claims Analysis
Total Claims: 0
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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) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |