US2644384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developer for continuous strip of photographic paper
Assignee: SWECO PRODUCTS Inc
•
Filing: 1948-12-08
•
Granted: 1953-07-07
•
Expires: 1968-12-08
Abstract
No abstract record available.
Inventors
- 👤 Valmore J Forgett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:30
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/08; G03D3/13; G03D3/14; G03D3/135
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525849A
Cited
US1141464A
Cited
US1587051A
Cited
US1967889A
Cited
US2248333A
Cited
US2346530A
Cited
US2461419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |