US2953683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photofluorographic camera
Assignee: Optische Industrie de Oude Delft NV
•
Filing: 1958-07-10
•
Granted: 1960-09-20
•
Expires: 1978-07-10
Abstract
No abstract record available.
Inventors
- 👤 Guntert Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:18
CPC Classifications
G; G03; G03B; G03B42/00; G03B42/02; G03B42/04; G03B42/047
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2331225A
Cited
US2248976A
Cited
US2433129A
Cited
US2560085A
Cited
US2595430A
Cited
US2858446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |