US2168051A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing continuous coated sheets of paper, film, or the like
Assignee: DEFENDER PHOTO SUPPLY Co
•
Filing: 1936-08-28
•
Granted: 1939-08-01
•
Expires: 1956-08-28
Abstract
No abstract record available.
Inventors
- 👤 Robert E Smith
- 👤 Karl T Molin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; Y; Y10; Y10S; Y10S430/00; Y10S430/136
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) | 1942-07-31 | 1943-01-30 | 1943-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-07-31 | 1947-01-30 | 1947-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-07-31 | 1951-01-30 | 1951-08-01 | $7700.00 | Window Closed / Lapsed |