Patent US1464601A successfully refreshed from Google Patents.
Patent US3136323A successfully refreshed from Google Patents.
US3136323A
Expired / Lapsed
US
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Etching machine
Assignee: Tasope Ltd
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Filing: 1963-04-29
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Granted: 1964-06-09
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Expires: 1983-04-29
Abstract
No abstract record available.
Inventors
- 👤 Charles S Martz
- 👤 Monroe R Hillhouse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:01
CPC Classifications
B; B41; B41C; B41C1/00; C; C23; C23F; C23F1/00; C23F1/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN AN ETCHING MACHINE, A TANK FOR HOLDING AN ETCHING BATH CONTAINING A PROTECTIVE BATH ADDITIVE, A HOLDER IN SAID TANK ADAPTED TO RETAIN A WORKPIECE SUBMERGED IN THE BATH AT AN ANGLE TO SAID PATH LEVEL, MEANS ATTACHED TO SAID HOLDER FOR ROTATING SAID HOLDER AND SAID WORKPIECE, AND MEANS IN THE BOTTOM OF SAID TANK FOR PASSING BUBBLES OF A FLUID LIGHTER THAN THE ETCHING BATH LIQUID UPWARDLY THROUGH THE BATH SO AS TO IMPINGE AND ROLL UPWARDLY ON THE INCLINED AND SUBMERGED WORKPIECE.
Claim 2
Dependent Claim
86 words
IN AN ETCHING MACHINE, A TANK FOR HOLDING AN ETCHING BATH CONTAINING A PROTECTIVE BATH ADDITIVE, A HOLDER IN SAID TANK ADAPTED TO RETAIN A WORKPIECE SUBMERGED IN THE BATH AT AN ANGLE TO SAID PATH LEVEL, MEANS ATTACHED TO SAID HOLDER FOR ROTATING SAID HOLDER AND SAID WORKPIECE, AND MEANS IN THE BOTTOM OF SAID TANK FOR PASSING BUBBLES OF A FLUID LIGHTER THAN THE ETCHING BATH LIQUID UPWARDLY THROUGH THE BATH SO AS TO IMPINGE AND ROLL UPWARDLY ON THE INCLINED AND SUBMERGED WORKPIECE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |