Patent US3299411A successfully refreshed from Google Patents.
US3299411A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable gap 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
- 👤 Anthony J Capozzi
- 👤 Robert A Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:28
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
104 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 VARIABLE LENGTH RECORDS, EACH INCLUDING AT LEAST TWO FIELDS, ONE OF SAID FIELDS INCLUDING INDICIA DESIGNATING THE LENGTH OF THE OTHER OF SAID FIELDS, MEANS FOR INJECTING A PLURALITY OF GAPS ONTO SAID MAGNETIZABLE SURFACE, MEANS FOR TRANSFERRING EACH OF SAID FIELDS TO SAID MAGNETIZABLE SURFACE, CONTROL MEANS CONNECTED TO SAID GAP INJECTING MEANS AND SAID FIELD TRANSFER MEANS FOR PRODUCING A PLURALITY OF ENABLING SIGNALS WHICH ALTERNATELY ENTER FIELDS AND GAPS ONTO SAID MAGNETIZABLE SURFACE,
Claim 2
Dependent Claim
104 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 VARIABLE LENGTH RECORDS, EACH INCLUDING AT LEAST TWO FIELDS, ONE OF SAID FIELDS INCLUDING INDICIA DESIGNATING THE LENGTH OF THE OTHER OF SAID FIELDS, MEANS FOR INJECTING A PLURALITY OF GAPS ONTO SAID MAGNETIZABLE SURFACE, MEANS FOR TRANSFERRING EACH OF SAID FIELDS TO SAID MAGNETIZABLE SURFACE, CONTROL MEANS CONNECTED TO SAID GAP INJECTING MEANS AND SAID FIELD TRANSFER MEANS FOR PRODUCING A PLURALITY OF ENABLING SIGNALS WHICH ALTERNATELY ENTER FIELDS AND GAPS ONTO SAID MAGNETIZABLE SURFACE,
References Cited (Backward Citations)
US2907002A
Cited
US2907010A
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 |