US2448519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intermittent film feed mechanism
Assignee: Argus Inc
•
Filing: 1944-07-19
•
Granted: 1948-09-07
•
Expires: 1964-07-19
Abstract
No abstract record available.
Inventors
- 👤 Roy A Clapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:34
CPC Classifications
G; G03; G03B; G03B1/00; G03B1/18; G03B1/20; G03B1/22; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18528; Y10T83/00; Y10T83/444; Y10T83/4486; Y10T83/4488
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB319644A
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US1780945A
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US1825254A
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US1918569A
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AU700332A
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US2106115A
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US2168941A
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US2281726A
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US2361291A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-09-07 | 1952-03-08 | 1952-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-09-07 | 1956-03-08 | 1956-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-09-07 | 1960-03-08 | 1960-09-07 | $7700.00 | Window Closed / Lapsed |