US3105228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic drum system
Assignee: International Business Machines Corp
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Filing: 1960-04-25
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Granted: 1963-09-24
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Expires: 1980-04-25
Abstract
No abstract record available.
Inventors
- 👤 Jr William Y Elliott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:10
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/16; H; H03; H03K; H03K17/00; H03K17/18
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
IN COMBINATION WITH A MOVING MAGNETIC DRUM HAVING A PLURALITY OF SUCCESSIVE REGULARLY SPACED STORAGE REGISTERS, MEANS ASSOCIATED WITH SAID STORAGE REGISTERS FOR GENERATING TIMING SIGNALS HAVING A DEFINITE TIME RELATION TO RESPECTIVE ONES OF SAID STORAGE REGISTERS, MEANS FOR DERIVING A SIGNAL OF PERIODIC WAVEFORM FROM EACH OF SAID SIGNAL GENERATING MEANS, PULSE GENERATOR MEANS FOR GENERATING TIMING PULSES WHOSE FREQUENCY IS AN INTEGRAL MULTIPLE OF THE FREQUENCY OF SAID TIMING SIGNALS, A COUNTER RESPONSIVE TO SAID PULSE GENERATOR FOR DIVIDING SAID TIMING PULSES INTO SERIES OF TIMING PULSES, EACH SERIES CORRESPONDING TO AT LEAST ONE STORAGE REGISTER, A FLIP-FLOP, CONNECTED TO
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |