US3501233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector
Assignee: Agfa Gevaert AG
•
Filing: 1967-09-06
•
Granted: 1970-03-17
•
Expires: 1987-09-06
Abstract
No abstract record available.
Inventors
- 👤 Alfred Winkler
- 👤 Karl Deeg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:13
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/06; G03B23/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-16 | 1973-09-15 | 1974-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-16 | 1977-09-15 | 1978-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-16 | 1981-09-15 | 1982-03-17 | $7700.00 | Window Closed / Lapsed |