US2773762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of unoxidisable timepiece springs
Assignee: Individual
•
Filing: 1951-03-27
•
Granted: 1956-12-11
•
Expires: 1971-03-27
Abstract
No abstract record available.
Inventors
- 👤 Dubois Ernest
- 👤 Siegrist Bruno
- 👤 Wakker Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:10
CPC Classifications
C; C22; C22C; C22C19/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
AN UNOXIDISABLE TIMEPIECE MAINSPRING WITH HIGH RESISTANCE TO FATIGUE CONSISTING OF A THIN RIBBON FORMED OF AN ALLOY CONTAINING: 10-25% OF IRON 1-5% OF TITANIUM 1-5% OF COLUMBIUM UP TO 10% OF TUNGSTEN UP TO 10% OF MOLYBDENUM UP TO 20% OF CHROMIUM UP TO 5% OF TANTALUM REST OF COBALT AND NICKEL, THE NICKEL CONTENT BEING IN THE LIMITS OF 25-35%, THE COBALT CONTENT BEING IN THE LIMITS OF 20-45% OF THE TOTAL WEIGHT AND THE CONTENT OF COLUMBIUM AND TITANIUM TOGETHER BEING AT LEAST EQUAL TO 3% AND NOT EXCEEDING 7%, SAID ALLOY BEING HARDENED AND THE COMPONENTS OF THE ALLOY BEING IN A STATE OF STRUCTURAL EQUILIBRIUM.
Claim 2
Dependent Claim
110 words
AN UNOXIDISABLE TIMEPIECE MAINSPRING WITH HIGH RESISTANCE TO FATIGUE CONSISTING OF A THIN RIBBON FORMED OF AN ALLOY CONTAINING: 10-25% OF IRON 1-5% OF TITANIUM 1-5% OF COLUMBIUM UP TO 10% OF TUNGSTEN UP TO 10% OF MOLYBDENUM UP TO 20% OF CHROMIUM UP TO 5% OF TANTALUM REST OF COBALT AND NICKEL, THE NICKEL CONTENT BEING IN THE LIMITS OF 25-35%, THE COBALT CONTENT BEING IN THE LIMITS OF 20-45% OF THE TOTAL WEIGHT AND THE CONTENT OF COLUMBIUM AND TITANIUM TOGETHER BEING AT LEAST EQUAL TO 3% AND NOT EXCEEDING 7%, SAID ALLOY BEING HARDENED AND THE COMPONENTS OF THE ALLOY BEING IN A STATE OF STRUCTURAL EQUILIBRIUM.
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) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |