US3222659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable density data recording utilizing normal skew characteristics
Assignee: International Business Machines Corp
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Filing: 1961-06-30
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Granted: 1965-12-07
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Expires: 1981-06-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond A Skov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
IN A DATA PROCESSING MACHINE OF THE TYPE UTILIZING A TRANSLATING RECORD AND HAVING A MAXIMUM POTENTIAL SKEW, SAID MAXIMUM POTENTIAL SKEW IMPARTING DIFFERENT, SUCCESSIVELY-GREATER MAXIMUM POTENTIAL LINEAR SKEW FOR DATA BITS RECORDED ON EACH SUBSEQUENT TRACK CLOSER TO THE OUTSIDE EDGES OF THE RECORD, THERE BEING NO SKEW RECOGNIZED IN A REFERENCE TRACK OF SAID RECORD, THE METHOD OF
Claim 2
Dependent Claim
60 words
IN A DATA PROCESSING MACHINE OF THE TYPE UTILIZING A TRANSLATING RECORD AND HAVING A MAXIMUM POTENTIAL SKEW, SAID MAXIMUM POTENTIAL SKEW IMPARTING DIFFERENT, SUCCESSIVELY-GREATER MAXIMUM POTENTIAL LINEAR SKEW FOR DATA BITS RECORDED ON EACH SUBSEQUENT TRACK CLOSER TO THE OUTSIDE EDGES OF THE RECORD, THERE BEING NO SKEW RECOGNIZED IN A REFERENCE TRACK OF SAID RECORD, THE METHOD OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-06 | 1969-06-07 | 1969-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-06 | 1973-06-07 | 1973-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-06 | 1977-06-07 | 1977-12-07 | $7700.00 | Window Closed / Lapsed |