US2774472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slide carrying means
Assignee: Bell and Howell Co
•
Filing: 1954-08-24
•
Granted: 1956-12-18
•
Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 Frank C Badalich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US320814A
Cited
US363083A
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US1918987A
Cited
US2007261A
Cited
US2458923A
Cited
US2644259A
Cited
US2590492A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |