US2496329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable film exposure aperture and film feed
Assignee: Unisys Corp
•
Filing: 1945-09-14
•
Granted: 1950-02-07
•
Expires: 1965-09-14
Abstract
No abstract record available.
Inventors
- 👤 Briechle Ambrosius
- 👤 Ernest C Worden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:56
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/32; G03B27/52; G03B27/58; G03B27/587
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US338541A
Cited
US1656138A
Cited
US1847531A
Cited
US2049041A
Cited
US2003691A
Cited
US1992492A
Cited
US2073627A
Cited
US2099681A
Cited
US2113580A
Cited
US2369247A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-06 | 1953-08-08 | 1954-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-06 | 1957-08-08 | 1958-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-06 | 1961-08-08 | 1962-02-07 | $7700.00 | Window Closed / Lapsed |