Patent US3299410A successfully refreshed from Google Patents.
US3299410A
Expired / Lapsed
US
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Data filing system
Assignee: International Business Machines Corp
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Filing: 1964-03-25
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Granted: 1967-01-17
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Expires: 1984-03-25
Abstract
No abstract record available.
Inventors
- 👤 James R Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:53
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/12; G11B20/1217; G11B20/1252; G06; G06F; G06F3/00; G06F3/06; G06F3/0601; G06F3/0602; G06F3/0604; G06F3/0607; G06F3/0628; G06F3/0638; G06F3/0668; G06F3/0671; G06F3/0673; G06F3/0674; G06F3/0676
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A DATA FILING SYSTEM FOR ENTERING A RECORD FORMAT ONTO A MAGNETIZABLE SURFACE ROTATING AT A CONSTANT RATE, COMPRISING A CORE STORAGE CIRCUIT FOR HOLDING A PLURALITY OF RECORDS EACH INCLUDING A PLURALITY OF FIELDS OF DETERMINABLE LENGTH, ONE OF SAID FIELDS CONTAINING INDICIA DESIGNATING SAID LENGTH OF AT LEAST SAID OTHER REMAINING FIELD, MEANS FOR WRITING A PLURALITY OF GAPS ONTO SAID MAGNETIZABLE SURFACE, MEANS FOR TRANSFERRING SAID FIELDS ONTO SAID MAGNETIZABLE SURFACE,
Claim 2
Dependent Claim
74 words
A DATA FILING SYSTEM FOR ENTERING A RECORD FORMAT ONTO A MAGNETIZABLE SURFACE ROTATING AT A CONSTANT RATE, COMPRISING A CORE STORAGE CIRCUIT FOR HOLDING A PLURALITY OF RECORDS EACH INCLUDING A PLURALITY OF FIELDS OF DETERMINABLE LENGTH, ONE OF SAID FIELDS CONTAINING INDICIA DESIGNATING SAID LENGTH OF AT LEAST SAID OTHER REMAINING FIELD, MEANS FOR WRITING A PLURALITY OF GAPS ONTO SAID MAGNETIZABLE SURFACE, MEANS FOR TRANSFERRING SAID FIELDS ONTO SAID MAGNETIZABLE SURFACE,
References Cited (Backward Citations)
US2863137A
Cited
US2918662A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-16 | 1970-07-18 | 1971-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-16 | 1974-07-18 | 1975-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-16 | 1978-07-18 | 1979-01-17 | $7700.00 | Window Closed / Lapsed |