US2241104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the treatment of photographic coatings
Assignee: NAAMLOOZE VENNOOTSCHAP CHEMISC
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Filing: 1939-04-22
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Granted: 1941-05-06
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Expires: 1959-04-22
Abstract
No abstract record available.
Inventors
- 👤 Lodewijk Pieter Frans Grinten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:11
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/006; G03C; G03C5/00; G03C5/18; G03D5/06; G03D5/067
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) | 1944-05-05 | 1944-11-04 | 1945-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-05-05 | 1948-11-04 | 1949-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-05-05 | 1952-11-04 | 1953-05-06 | $7700.00 | Window Closed / Lapsed |