US3265318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic tape machine
Assignee: Ampex Corp
•
Filing: 1964-05-04
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Granted: 1966-08-09
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Expires: 1984-05-04
Abstract
No abstract record available.
Inventors
- 👤 William A Ellmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:19
CPC Classifications
G; G11; G11B; G11B15/00; G11B15/60; G11B15/66; G11B15/67; G11B15/674
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A TAKE-UP HUB FOR MAGNETIC TAPE RECORDER COMPRISING: A CIRCULAR BASE AND SPACED TEETH MOUNTED AROUND THE CIRCUMFERENCE OF THE BASE, EACH TOOTH HAVING THE SHAPE OF A TETRAHEDRON AND HAVING ONE EDGE PERPENDICULAR TO THE BASE.
Claim 2
Dependent Claim
37 words
A TAKE-UP HUB FOR MAGNETIC TAPE RECORDER COMPRISING: A CIRCULAR BASE AND SPACED TEETH MOUNTED AROUND THE CIRCUMFERENCE OF THE BASE, EACH TOOTH HAVING THE SHAPE OF A TETRAHEDRON AND HAVING ONE EDGE PERPENDICULAR TO THE BASE.
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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |