US3439919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recording and/or play-back apparatus employing a record carrier in tape form
Assignee: US Philips Corp
•
Filing: 1966-07-11
•
Granted: 1969-04-22
•
Expires: 1986-07-11
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Laa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:41
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/675; G11B15/67581; G11B15/67584; G11B23/00; G11B23/02; G11B23/04; G11B23/08; G11B23/087; G11B23/08707; G11B23/0875; G11B27/00; G11B27/10; G11B27/11; G11B27/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2788437A
Cited
DE1128165B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |