US3082509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of constructing magnetic recording devices
Assignee: Honeywell Inc
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Filing: 1959-09-10
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Granted: 1963-03-26
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Expires: 1979-09-10
Abstract
No abstract record available.
Inventors
- 👤 Richard B Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:39
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/187; G11B5/29; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49048; Y10T29/4905; Y10T29/49055; Y10T29/4981
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF MAKING A PORTION OF A MAGNETIC RECORDING HEAD ASSEMBLY HAVING A PLURALITY OF POLE PIECES EACH HAVING A LINEAR RECORDING EDGE ON ONE END THEREOF WHICH COMPRISES FORMING IN A NONMAGNETIC METAL BLOCK A SERIES OF ALIGNED DEPRESSIONS UNIFORMLY DISPLACED AND CONFORMING TO THE CONTOUR OF THE ENDS OF A PLURALITY OF POLE PIECES SO THAT THE RECORDING EDGES OF SAID POLE PIECES WHEN POSITIONED WILL LIE IN PARALLEL PLANES, BONDING THE ENDS OF THE POLE PIECES IN POSITION IN SAID BLOCK AWAY TO FORM A CONTINUOUS METALLIC RECORDING SURFACE INCORPORATING THE EXPOSED ENDS AND THE LINEAR RECORDING EDGES OF SAID POLE PIECES.
Claim 2
Independent Claim
106 words
THE METHOD OF MAKING A PORTION OF A MAGNETIC RECORDING HEAD ASSEMBLY HAVING A PLURALITY OF POLE PIECES EACH HAVING A LINEAR RECORDING EDGE ON ONE END THEREOF WHICH COMPRISES FORMING IN A NONMAGNETIC METAL BLOCK A SERIES OF ALIGNED DEPRESSIONS UNIFORMLY DISPLACED AND CONFORMING TO THE CONTOUR OF THE ENDS OF A PLURALITY OF POLE PIECES SO THAT THE RECORDING EDGES OF SAID POLE PIECES WHEN POSITIONED WILL LIE IN PARALLEL PLANES, BONDING THE ENDS OF THE POLE PIECES IN POSITION IN SAID BLOCK AWAY TO FORM A CONTINUOUS METALLIC RECORDING SURFACE INCORPORATING THE EXPOSED ENDS AND THE LINEAR RECORDING EDGES OF SAID POLE PIECES.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |