Patent US2437583A successfully refreshed from Google Patents.
Patent US935115A successfully refreshed from Google Patents.
US935115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic developer.
Assignee: Individual
•
Filing: 1905-11-27
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Granted: 1909-09-28
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Expires: 1925-11-27
Abstract
No abstract record available.
Inventors
- 👤 William Fraser Claughton Kelly
- 👤 John Arthur Bentham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:16
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/264; G03C5/265
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) | 1912-09-27 | 1913-03-29 | 1913-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-09-27 | 1917-03-29 | 1917-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-09-27 | 1921-03-29 | 1921-09-28 | $7700.00 | Window Closed / Lapsed |