US2375706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide projector apparatus
Assignee: Bell and Howell Co
•
Filing: 1942-06-17
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Granted: 1945-05-08
•
Expires: 1962-06-17
Abstract
No abstract record available.
Inventors
- 👤 Stechbart Bruno
- 👤 Edward E Strauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:43
CPC Classifications
G; G03; G03B; G03B23/00; G03B23/02; G03B23/06; Y; Y10; Y10T; Y10T74/00; Y10T74/15; Y10T74/1503
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-05-07 | 1948-11-06 | 1949-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-05-07 | 1952-11-06 | 1953-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-05-07 | 1956-11-06 | 1957-05-08 | $7700.00 | Window Closed / Lapsed |