US3504445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Audio-visual apparatus
Assignee: CBS Broadcasting Inc
•
Filing: 1967-04-13
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Granted: 1970-04-07
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Expires: 1987-04-13
Abstract
No abstract record available.
Inventors
- 👤 Peter C Goldmark
- 👤 Arthur Kaiser
- 👤 Benjamin B Bauer
- 👤 Warren C Portman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:21
CPC Classifications
G; G03; G03B; G03B31/00; G03B31/06; G03B21/00; G03B21/10; G09; G09B; G09B5/00; G09B5/06; G09B5/067; G09B7/00; G09B7/06; G09B7/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-04-06 | 1973-10-06 | 1974-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-04-06 | 1977-10-06 | 1978-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-04-06 | 1981-10-06 | 1982-04-07 | $7700.00 | Window Closed / Lapsed |