US1877512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing normal light effects
Assignee: NAT PAPER PROCESS Co
•
Filing: 1929-02-21
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Granted: 1932-09-13
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Expires: 1949-02-21
Abstract
No abstract record available.
Inventors
- 👤 Albert B Hurley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:25
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G03; G03C; G03C11/00; G03C11/08; G03C11/10; Y; Y10; Y10S; Y10S359/00; Y10S359/90
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) | 1935-09-13 | 1936-03-14 | 1936-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-09-13 | 1940-03-14 | 1940-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-09-13 | 1944-03-14 | 1944-09-13 | $7700.00 | Window Closed / Lapsed |