Patent US2079039A successfully refreshed from Google Patents.
Patent US3001444A successfully refreshed from Google Patents.
US3001444A
Expired / Lapsed
US
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Sound projector for projecting still transparencies on film and reproducing sound from a sound record area
Assignee: Kalart Co Inc
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Filing: 1959-04-27
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Granted: 1961-09-26
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Castedello William
- 👤 Werner K Bender
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:00
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |