Patent US2576494A successfully refreshed from Google Patents.
US2576494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasing device for mirror reflex adapters for photographic cameras
Assignee: KARL MULLER JR
•
Filing: 1949-03-26
•
Granted: 1951-11-27
•
Expires: 1969-03-26
Abstract
No abstract record available.
Inventors
- 👤 Waggin Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:46
CPC Classifications
G; G03; G03B; G03B9/00; G03B9/58
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE606527C
Cited
FR760954A
Cited
FR782058A
Cited
GB469710A
Cited
US2182097A
Cited
US2480336A
Cited
US2466664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-26 | 1955-05-28 | 1955-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-26 | 1959-05-28 | 1959-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-26 | 1963-05-28 | 1963-11-27 | $7700.00 | Window Closed / Lapsed |