US3144520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetostrictive record and recording apparatus
Assignee: Individual
•
Filing: 1958-05-19
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Granted: 1964-08-11
•
Expires: 1978-05-19
Abstract
No abstract record available.
Inventors
- 👤 Levin Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:02
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/78; H04N5/7805; G; G11; G11B; G11B11/00; G11B3/00; G11B3/64; G11B9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A MAGNETIC RECORDING APPARATUS, AN INFORMATION CARRIER COMPRISING A FIRST MAGNETOSTRICTIVE MEDIUM WHICH IS ADAPTED TO BE REMANENT CHANGED BY MECHANICAL STRESSES, A SECOND MAGNETIC MEDIUM ADAPTED TO BE REMANENT CHANGED BY THE REMANENT CHANGE OF SAID FIRST MAGNETOSTRICTIVE MEDIUM, SAID FIRST MAGNETOSTRICTIVE MEDIUM AND SAID SECOND MAGNETIC MEDIUM COMPRISING A COMBINED MEDIUM OF INTERSPERSED COMMINUTED PARTICLES; SAID ME-
Claim 2
Dependent Claim
60 words
IN A MAGNETIC RECORDING APPARATUS, AN INFORMATION CARRIER COMPRISING A FIRST MAGNETOSTRICTIVE MEDIUM WHICH IS ADAPTED TO BE REMANENT CHANGED BY MECHANICAL STRESSES, A SECOND MAGNETIC MEDIUM ADAPTED TO BE REMANENT CHANGED BY THE REMANENT CHANGE OF SAID FIRST MAGNETOSTRICTIVE MEDIUM, SAID FIRST MAGNETOSTRICTIVE MEDIUM AND SAID SECOND MAGNETIC MEDIUM COMPRISING A COMBINED MEDIUM OF INTERSPERSED COMMINUTED PARTICLES; SAID ME-
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |