US2541289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic camera interlock
Assignee: Individual
•
Filing: 1948-08-19
•
Granted: 1951-02-13
•
Expires: 1968-08-19
Abstract
No abstract record available.
Inventors
- 👤 Paul J M Richartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:52
CPC Classifications
G; G03; G03B; G03B17/00; G03B17/42
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US464904A
Cited
US492734A
Cited
US1642818A
Cited
DE687493C
Cited
US2150696A
Cited
US2168998A
Cited
US2168974A
Cited
US2241122A
Cited
US2406366A
Cited
US2367504A
Cited
US2398412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |