Patent US4930521A successfully refreshed from Google Patents.
US3266046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic printer
Assignee: LE FEBURE Inc
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Filing: 1961-01-24
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Granted: 1966-08-09
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Expires: 1981-01-24
Abstract
No abstract record available.
Inventors
- 👤 Sherman H Boyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:25
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/22; G03G15/34; G03G15/344; G03G15/346; G03G15/06; Y; Y10; Y10S; Y10S101/00; Y10S101/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
THE COMBINATION COMPRISING: A CONTAINER FOR CHARGED ELECTROSCOPIC PARTICLES, SAID CONTAINER HAVING AN OPENING; A PLATE OUTSIDE THE CONTAINER AND OPPOSITE SAID OPENING; MEANS TO IMPOSE AN ELECTRICAL POTENTIAL BETWEEN SAID CONTAINER AND PLATE FOR DIRECTING SAID PARTICLES THROUGH SAID OPENING; A GRILLE INTERPOSED BETWEEN SAID PLATE AND OPENING; MEANS FOR VARYING THE POTENTIAL OF SELECTED PORTIONS OF SAID GRILLE, FOR CONTROLLING THE PASSAGE OF SAID PARTICLES, WHEREBY ONLY PARTICLES AT A SELECTED AREA MAY IMPINGE ON A PRINTING MEDIUM PLACED IN THE SPACE BETWEEN SAID GRILLE AND PLATE.
Claim 2
Dependent Claim
89 words
THE COMBINATION COMPRISING: A CONTAINER FOR CHARGED ELECTROSCOPIC PARTICLES, SAID CONTAINER HAVING AN OPENING; A PLATE OUTSIDE THE CONTAINER AND OPPOSITE SAID OPENING; MEANS TO IMPOSE AN ELECTRICAL POTENTIAL BETWEEN SAID CONTAINER AND PLATE FOR DIRECTING SAID PARTICLES THROUGH SAID OPENING; A GRILLE INTERPOSED BETWEEN SAID PLATE AND OPENING; MEANS FOR VARYING THE POTENTIAL OF SELECTED PORTIONS OF SAID GRILLE, FOR CONTROLLING THE PASSAGE OF SAID PARTICLES, WHEREBY ONLY PARTICLES AT A SELECTED AREA MAY IMPINGE ON A PRINTING MEDIUM PLACED IN THE SPACE BETWEEN SAID GRILLE AND PLATE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |