US1291524A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for perforating cinematographic films.
Assignee: Bell and Howell Co
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Filing: 1917-03-02
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Granted: 1919-01-14
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Expires: 1937-03-02
Abstract
No abstract record available.
Inventors
- 👤 Albert S Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:36
CPC Classifications
B; B21; B21D; B21D28/00; A; A01; A01J; A01J21/00; A01J21/02; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2092; Y10T83/2096; Y10T83/2135; Y10T83/2148; Y10T83/444; Y10T83/463; Y10T83/4635; Y10T83/929; Y10T83/9411; Y10T83/9423; Y10T83/9428; Y10T83/943
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1922-01-13 | 1922-07-15 | 1923-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-01-13 | 1926-07-15 | 1927-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-01-13 | 1930-07-15 | 1931-01-14 | $7700.00 | Window Closed / Lapsed |