US3145128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for chemical milling convexo-concave bulkheads
Assignee: Individual
•
Filing: 1961-01-13
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Granted: 1964-08-18
•
Expires: 1981-01-13
Abstract
No abstract record available.
Inventors
- 👤 Max H Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:50
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/08; Y; Y10; Y10T; Y10T279/00; Y10T279/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
IN AN APPARATUS FOR CHEMICAL MILLING A CONVEXOCONCAVE BULKHEAD WITH CONVERGES FROM A LARGE OPEN END TO AN APEX, THE APEX OF THE BULKHEAD HAVING AN APERTURE, (A) A TANK ADAPTED TO HOLD AN ETCHING BATH, (B) SAID TANK HAVING TWO SPACED AND OPPOSED SIDES, (C) A PAIR OF U-SHAPED BEARINGS, ONE OF SAID BEARING BEING SUPPORTED BY ONE OF SAID SIDES AND THE OTHER OF SAID BEARINGS BEING SUPPORTED BY THE OTHER OF SAID SIDES; (D) AN AXLE ADPATED TO EXTEND THROUGH THE APEX APERTURE OF SAID BULKHEAD; (E) SAID AXLE EXTENDING BETWEEN AND SUPPORTED BY SAID U-SHAPED BEARINGS; (F) SAID AXLE CONSISTING OF A FIRST PORTION TELESCOPED OVER A SECOND PORTION;
Claim 2
Dependent Claim
113 words
IN AN APPARATUS FOR CHEMICAL MILLING A CONVEXOCONCAVE BULKHEAD WITH CONVERGES FROM A LARGE OPEN END TO AN APEX, THE APEX OF THE BULKHEAD HAVING AN APERTURE, (A) A TANK ADAPTED TO HOLD AN ETCHING BATH, (B) SAID TANK HAVING TWO SPACED AND OPPOSED SIDES, (C) A PAIR OF U-SHAPED BEARINGS, ONE OF SAID BEARING BEING SUPPORTED BY ONE OF SAID SIDES AND THE OTHER OF SAID BEARINGS BEING SUPPORTED BY THE OTHER OF SAID SIDES; (D) AN AXLE ADPATED TO EXTEND THROUGH THE APEX APERTURE OF SAID BULKHEAD; (E) SAID AXLE EXTENDING BETWEEN AND SUPPORTED BY SAID U-SHAPED BEARINGS; (F) SAID AXLE CONSISTING OF A FIRST PORTION TELESCOPED OVER A SECOND PORTION;
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) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |