US2581691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera
Assignee: Bell and Howell Co
•
Filing: 1946-08-19
•
Granted: 1952-01-08
•
Expires: 1966-08-19
Abstract
No abstract record available.
Inventors
- 👤 Lewis H Moomaw
- 👤 Bernzott Hugo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:10
CPC Classifications
G; G03; G03B; G03B19/00; G03B19/02; G03B19/04; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0921; Y10T292/0922; Y10T292/0925; Y10T292/0926; Y10T292/0928; Y10T292/0934; Y10T292/096; Y10T292/0961; Y10T292/0962; Y10T292/0969; Y10T292/097
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1196601A
Cited
US2350693A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |