US3256775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound tape and picture slide holder
Assignee: Bell and Howell Co
•
Filing: 1962-02-08
•
Granted: 1966-06-21
•
Expires: 1982-02-08
Abstract
No abstract record available.
Inventors
- 👤 Walter J Hall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:21
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06; G11; G11B; G11B15/00; G11B15/675; G11B15/68; G11B15/6895
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2499700A
Cited
US2679394A
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US2961922A
Cited
US2925753A
Cited
US3046836A
Cited
US3057255A
Cited
DE1096065B
Cited
US3177768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |