US1247682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-control mechanism for cinematographic and like apparatus.
Assignee: Bell and Howell Co
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Filing: 1915-09-27
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Granted: 1917-11-27
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Expires: 1935-09-27
Abstract
No abstract record available.
Inventors
- 👤 Albert S Howell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:08
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/02; G03B17/12; G03B17/14; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8225; Y10T137/8275; Y10T137/8292; Y10T137/8309
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) | 1920-11-26 | 1921-05-28 | 1921-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-11-26 | 1925-05-28 | 1925-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-11-26 | 1929-05-28 | 1929-11-27 | $7700.00 | Window Closed / Lapsed |