Patent US3486583A successfully refreshed from Google Patents.
Patent US3124804A successfully refreshed from Google Patents.
US3124804A
Expired / Lapsed
US
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Electrostatic recording head
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
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Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:55
CPC Classifications
G; G06; G06K; G06K1/00; G06K1/12; G06K1/128; G03; G03G; G03G15/00; G03G15/22; G03G15/32; G03G15/321; G03G15/325; H; H04; H04N; H04N1/00; H04N1/23; H04N1/29
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
IN AN ELECTROSTATIC RECORDING HEAD FOR RECORDING A PLURALITY OF CODE CHANNELS ON A RECORDING MEDIUM, THE COMBINATION OF A PAIR OF HIGH MELTING POINT PIN ELECTRODES DISPOSED PARALLEL TO EACH OTHER AND EACH HAVING A FREE END ADJACENT THE RECORDING MEDIUM, A HIGH VOLTAGE PULSE CIRCUIT FOR PROVIDING NEGATIVE HIGH VOLTAGE PULSES TO ONE OF SAID ELECTRODES, AND A CURRENT LIMITING RESISTOR CONNECTED IN SERIES BETWEEN THE OTHER OF SAID ELECTRODES AND GROUND.
References Cited (Backward Citations)
US3076968A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |