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US2445651A
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Flashlight movie projector
Assignee: STEPHEN L PIATKOWSKI
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Filing: 1947-04-24
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Granted: 1948-07-20
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Expires: 1967-04-24
Abstract
No abstract record available.
Inventors
- 👤 Karl D Weavie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:59
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/32; G03B23/00; G03B23/08; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/1987; Y10T74/19874
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1019932A
Cited
US1110247A
Cited
US1102735A
Cited
US1235997A
Cited
US1965688A
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US2090086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-07-20 | 1952-01-19 | 1952-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-07-20 | 1956-01-19 | 1956-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-07-20 | 1960-01-19 | 1960-07-20 | $7700.00 | Window Closed / Lapsed |