US2576586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Projection film viewer
Assignee: CITY NAT BANK AND TRUST COMPAN
•
Filing: 1948-03-12
•
Granted: 1951-11-27
•
Expires: 1968-03-12
Abstract
No abstract record available.
Inventors
- 👤 Frankel Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:36
CPC Classifications
G; G03; G03B; G03B41/00; G03B41/02; G03B41/04; G03B41/08; G03B21/00; G03B21/10; G03B21/11
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1807737A
Cited
US1956391A
Cited
GB385377A
Cited
US2087250A
Cited
US2297222A
Cited
US2278781A
Cited
US2285644A
Cited
US2381997A
Cited
US2422816A
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 |