US3321585A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating device for magnetic tape and transducing heads
Assignee: Ampex Corp
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Filing: 1962-10-24
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Granted: 1967-05-23
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Expires: 1982-10-24
Abstract
No abstract record available.
Inventors
- 👤 Michael O Felix
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:23
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/62; G11B15/61; G11B5/00; G11B5/48; G11B5/52
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
APPARATUS FOR USE WITH A MAGNETIC TAPE RECORDING AND REPRODUCING MACHINE OF THE TYPE WHEREIN A TAPE IS MOVED BY A CAPSTAN PAST A TRANSDUCING HEAD LOCATED UPSTREAM FROM SAID CAPSTAN, COMPRISING: A VOLATILE LIQUID; MEANS FOR DIRECTING SAID VOLATILE LIQUID IN A SPRAY ONTO SAID TAPE AT A POINT UPSTREAM FROM SAID TRANSDUCING HEAD; MEANS FOR SPACING SAID SPRAY MEAN SFROM SAID TAPE AND FROM SAID HEAD FOR A FIRST SPACE SUFFICIENT TO ENSURE THAT THE UNVOLATILIZED LIQUID REMAINING ON SAID TAPE AT SAID HEAD HAS A CONCENTRATION LESS THAN WOULD DESTROY THE TRANSDUCING ACTION OF SAID HEAD WITH RESPECT TO SAID TAPE; AND
References Cited (Backward Citations)
US2426838A
Cited
US2642722A
Cited
US2664173A
Cited
US2612566A
Cited
US2841244A
Cited
US3060431A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |