US3131256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic-writing system
Assignee: SRI International Inc
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Filing: 1962-05-31
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Granted: 1964-04-28
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 Hugh F Frohbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:28
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/32; G03G15/321; G03G15/325; H; H04; H04N; H04N3/00; H04N3/10; H04N3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
AN ELECTROSTATIC PRINTING SYSTEM COMPRISING A FIRST AND SECOND DELAY LINE EACH HAVING A PLURALITY OF TAPS SPACED ALONG THE LENGTH THEREOF, A FIRST PLANE SUBSTANTIALLY PARALLEL TO AND SPACED FROM A SECOND PLANE, SAID FIRST AND SECOND PLANES DEFINING AN ELECTROSTATIC PRINTING REGION THEREBETWEEN, A FIRST PLURALITY OF SPACED AND SUBSTANTIALLY PARALLEL ELONGATED CONDUCTORS SUBSTANTIALLY IN SAID FIRST PLANE, A SECOND PLURALITY OF SPACED SUBSTANTIALLY PARALLEL ELONGATED CONDUCTORS SUBSTANTIALLY IN SAID SECOND PLANE, SAID FIRST PLURALITY OF ELONGATED CONDUCTORS EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO SAID SECOND PLURALITY OF ELONGATED CONDUCTORS, MEANS CONNECTING EACH OF THE CONDUCTORS IN SAID FIRST PLURALITY OF CONDUCTORS TO A DIFFERENT ONE OF THE PLURALITY OF TAPS OF SAID FIRST DELAY LINE, MEANS CONNECTING EACH OF THE CONDUCTORS IN SAID SECOND PLURALITY OF CONDUCTORS TO A DIFFERENT ONE OF THE PLURALITY OF TAPS OF SAID SECOND DELAY LINE, AND MEANS FOR EFFECTUATING ELECTRICAL DISCHARGES BETWEEN PREDETERMINED CONDUCTORS OF SAID FIRST AND SECOND PLURALITIES OF CONDUCTORS INCLUDES A THIRD DELAY LINE HAVING A PLURALITY OF TAPS ALONG THE LENGTH THEREOF, A THIRD PLURALITY OF ELONGATED, SPACED SUBSTANTIALLY PARALLEL CONDUCTORS POSITIONED BEHIND SAID SECOND PLURALITY OF ELONGATED CONDUCTORS AND EXTENDING PARALLEL TO SAID FIRST PLURALITY OF ELONGATED CONDUCTORS.
Claim 2
Dependent Claim
202 words
AN ELECTROSTATIC PRINTING SYSTEM COMPRISING A FIRST AND SECOND DELAY LINE EACH HAVING A PLURALITY OF TAPS SPACED ALONG THE LENGTH THEREOF, A FIRST PLANE SUBSTANTIALLY PARALLEL TO AND SPACED FROM A SECOND PLANE, SAID FIRST AND SECOND PLANES DEFINING AN ELECTROSTATIC PRINTING REGION THEREBETWEEN, A FIRST PLURALITY OF SPACED AND SUBSTANTIALLY PARALLEL ELONGATED CONDUCTORS SUBSTANTIALLY IN SAID FIRST PLANE, A SECOND PLURALITY OF SPACED SUBSTANTIALLY PARALLEL ELONGATED CONDUCTORS SUBSTANTIALLY IN SAID SECOND PLANE, SAID FIRST PLURALITY OF ELONGATED CONDUCTORS EXTENDING SUBSTANTIALLY AT RIGHT ANGLES TO SAID SECOND PLURALITY OF ELONGATED CONDUCTORS, MEANS CONNECTING EACH OF THE CONDUCTORS IN SAID FIRST PLURALITY OF CONDUCTORS TO A DIFFERENT ONE OF THE PLURALITY OF TAPS OF SAID FIRST DELAY LINE, MEANS CONNECTING EACH OF THE CONDUCTORS IN SAID SECOND PLURALITY OF CONDUCTORS TO A DIFFERENT ONE OF THE PLURALITY OF TAPS OF SAID SECOND DELAY LINE, AND MEANS FOR EFFECTUATING ELECTRICAL DISCHARGES BETWEEN PREDETERMINED CONDUCTORS OF SAID FIRST AND SECOND PLURALITIES OF CONDUCTORS INCLUDES A THIRD DELAY LINE HAVING A PLURALITY OF TAPS ALONG THE LENGTH THEREOF, A THIRD PLURALITY OF ELONGATED, SPACED SUBSTANTIALLY PARALLEL CONDUCTORS POSITIONED BEHIND SAID SECOND PLURALITY OF ELONGATED CONDUCTORS AND EXTENDING PARALLEL TO SAID FIRST PLURALITY OF ELONGATED CONDUCTORS.
References Cited (Backward Citations)
US2610102A
Cited
US3096516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |