US2424339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Picture projecting apparatus and projection system therefor
Assignee: Bell and Howell Co
•
Filing: 1944-05-01
•
Granted: 1947-07-22
•
Expires: 1964-05-01
Abstract
No abstract record available.
Inventors
- 👤 Stechbart Bruno
- 👤 Paul C Foote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:36
CPC Classifications
G; G03; G03B; G03B15/00; G03B15/08
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-21 | 1951-01-20 | 1951-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-21 | 1955-01-20 | 1955-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-21 | 1959-01-20 | 1959-07-22 | $7700.00 | Window Closed / Lapsed |