Patent US6029252A successfully refreshed from Google Patents.
Patent US2990758A successfully refreshed from Google Patents.
US2990758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic cameras
Assignee: Zeiss Ikon AG
•
Filing: 1957-01-23
•
Granted: 1961-07-04
•
Expires: 1977-01-23
Abstract
No abstract record available.
Inventors
- 👤 Sauer Edgar
- 👤 Ruhle Hans
- 👤 Metzger Otto
- 👤 Hahn Johann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:58
CPC Classifications
G; G03; G03B; G03B7/00; G03B7/04; G03B7/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2536500A
Cited
GB442409A
Cited
US2213749A
Cited
US2242013A
Cited
US2351834A
Cited
US2467946A
Cited
AT179192B
Cited
AT184058B
Cited
FR1108729A
Cited
FR1111448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-03 | 1965-01-02 | 1965-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-03 | 1969-01-02 | 1969-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-03 | 1973-01-02 | 1973-07-04 | $7700.00 | Window Closed / Lapsed |