US3016428A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary head drive control mechanism and circuitry for recording magnetic tape recording and/or reproducing apparatus
Assignee: Ampex Corp
•
Filing: 1958-08-04
•
Granted: 1962-01-09
•
Expires: 1978-08-04
Abstract
No abstract record available.
Inventors
- 👤 Louis J Kabell
- 👤 Howard E Murphy
- 👤 Walter B Guggi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:35
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/24; H02P7/245; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/782; Y; Y10; Y10S; Y10S388/00; Y10S388/923; Y10S388/93
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2253575A
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US2370637A
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US2715202A
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US2769949A
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US2876295A
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US2796572A
Cited
US2954441A
Cited
US2944108A
Cited
US2922099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-08 | 1965-07-10 | 1966-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-08 | 1969-07-10 | 1970-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-08 | 1973-07-10 | 1974-01-09 | $7700.00 | Window Closed / Lapsed |