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US3562003A
Expired / Lapsed
US
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Electrostencil
Assignee: AS FOR KONTOR KEMI
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Filing: 1967-07-07
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Granted: 1971-02-09
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Expires: 1987-07-07
Abstract
Abstract A STENCIL BLANK INCLUDES A STENCIL SHEET WHICH IS CAPABLE OF BEING PERFORATED BY ELECTRIC SPARKS, THE STENCIL SHEET BEING JUXTAPOSED WITH AND SUPPORTED ON A BACKING SHEET MADE OF AN ELECTRICALLY CONDUCTIVE MATERIAL. THE BACKING SHEET MAY COMPRISE ELECTRICALLY CONDUCTIVE BLACK GLAZED PAPER. THE STENCIL SHEET MAY BE FORMED ENTIRELY OF AN INHERENTLY ELECTRICALLY CONDUCTIVE SYNTHETI CRESIN. IN A MODIFIED FORM OF THE INVENTION, THE STENCIL SHEET COMPRISES A THIN SHEET OF PAPAER CONTAINING FINELY DISPERSED CARBON PARTICLES AND COATED WITH A LAYER OF INHERENTLY ELECTRICALLY CONDUCTIVE SYNTHETIC RESIN.
Inventors
- 👤 Alfred Frohlich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:47
CPC Classifications
B; B41; B41N; B41N1/00; B41N1/24; B41N1/246; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |