US3157879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for printing by means of an electron beam
Assignee: International Business Machines Corp
•
Filing: 1959-12-28
•
Granted: 1964-11-17
•
Expires: 1979-12-28
Abstract
No abstract record available.
Inventors
- 👤 Jack D Kuehler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
H; H01; H01J; H01J31/00; H01J31/02; H01J31/06; H01J31/065; B; B41; B41J; B41J2/00; B41J2/315; B41J2/435; B41J2/475; B41M; B41M5/00; B41M5/26; H01J33/00; H01J33/02; H01J33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PRINTING APPARATUS COMPRISING AN EVACUATED ENVELOPE, AN ELECTRON-EMITTING ELECTRODE PROVIDED WITHIN SAID ENVELOPE, AN ELECTRON-PERMEABLE WINDOW PROVIDED IN SAID ENVELOPE OPPOSITE SAID ELECTRODE, A MEMBER OF DIELECTRIC MATERIAL HAVING A PLURALITY OF CHANNELS ADAPTED TO PASS ELECTRONS ARRANGED OVER SAID WINDOW, MEANS FOR BLOCKING SELECTED ONES OF SAID CHANNELS TO THE PASSAGE OF ELECTRONS TO ESTABLISH ELECTRON PASSING AREAS OF DESIRED
Claim 2
Dependent Claim
62 words
A PRINTING APPARATUS COMPRISING AN EVACUATED ENVELOPE, AN ELECTRON-EMITTING ELECTRODE PROVIDED WITHIN SAID ENVELOPE, AN ELECTRON-PERMEABLE WINDOW PROVIDED IN SAID ENVELOPE OPPOSITE SAID ELECTRODE, A MEMBER OF DIELECTRIC MATERIAL HAVING A PLURALITY OF CHANNELS ADAPTED TO PASS ELECTRONS ARRANGED OVER SAID WINDOW, MEANS FOR BLOCKING SELECTED ONES OF SAID CHANNELS TO THE PASSAGE OF ELECTRONS TO ESTABLISH ELECTRON PASSING AREAS OF DESIRED
References Cited (Backward Citations)
US2771336A
Cited
US2716048A
Cited
FR1077037A
Cited
US2793178A
Cited
US2930847A
Cited
US2978608A
Cited
US2879422A
Cited
US2862144A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |