US3119919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the removal of portions of deposited metal films
Assignee: Daystrom Inc
•
Filing: 1961-01-30
•
Granted: 1964-01-28
•
Expires: 1981-01-30
Abstract
No abstract record available.
Inventors
- 👤 William W Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:47
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49099; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301232
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN AN ELECTRICAL ENGRAVING COPYING SYSTEM OF THE TYPE WHICH INCLUDES A PROBE OF CONDUCTING MATERIAL ADAPTED FOR MOVEMENT OVER THE FILM OF AN ELECTRICALLY CONDUCTIVE FILM-TYPE RESISTOR FOR REMOVAL OF THE FILM UPON PASSAGE OF AN ELECTRICAL CURRENT THROUGH THE PROBE, THE MOVEMENT OF THE PROBE CORRESPONDING TO THE MOVEMENT OF A STYLUS MECHANICALLY COUPLED THERETO WHICH STYLUS IS ADAPTED FOR MOVEMENT ALONG A GROOVE IN A MASTER ENGRAVING PLATE; THE IMPROVEMENT COMPRISING A MASTER ENGRAVING PLATE OF CONDUCTING MATERIAL AND HAVING AN INSULATING FILM THEREOVER, MEANS FORMING A GROOVE THROUGH THE INSULATING FILM INTO THE PLATE, A STYLUS OF CONDUCTING MATERIAL ADAPTED TO ELECTRICALLY CONTACT THE PLATE WITHIN THE GROOVE THEREIN, AND A SOURCE OF POTENTIAL CONNECTED BETWEEN THE PROBE AND THE FILM OF THE RESISTOR THROUGH THE SAID CONDUCTING STYLUS AND PLATE.
Claim 2
Dependent Claim
135 words
IN AN ELECTRICAL ENGRAVING COPYING SYSTEM OF THE TYPE WHICH INCLUDES A PROBE OF CONDUCTING MATERIAL ADAPTED FOR MOVEMENT OVER THE FILM OF AN ELECTRICALLY CONDUCTIVE FILM-TYPE RESISTOR FOR REMOVAL OF THE FILM UPON PASSAGE OF AN ELECTRICAL CURRENT THROUGH THE PROBE, THE MOVEMENT OF THE PROBE CORRESPONDING TO THE MOVEMENT OF A STYLUS MECHANICALLY COUPLED THERETO WHICH STYLUS IS ADAPTED FOR MOVEMENT ALONG A GROOVE IN A MASTER ENGRAVING PLATE; THE IMPROVEMENT COMPRISING A MASTER ENGRAVING PLATE OF CONDUCTING MATERIAL AND HAVING AN INSULATING FILM THEREOVER, MEANS FORMING A GROOVE THROUGH THE INSULATING FILM INTO THE PLATE, A STYLUS OF CONDUCTING MATERIAL ADAPTED TO ELECTRICALLY CONTACT THE PLATE WITHIN THE GROOVE THEREIN, AND A SOURCE OF POTENTIAL CONNECTED BETWEEN THE PROBE AND THE FILM OF THE RESISTOR THROUGH THE SAID CONDUCTING STYLUS AND PLATE.
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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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |