US2600175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical contact
Assignee: Metals and Controls Corp
•
Filing: 1946-09-11
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Granted: 1952-06-10
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Expires: 1966-09-11
Abstract
No abstract record available.
Inventors
- 👤 Renzo U Volterra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:54
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12875; Y10T428/12896; Y10T428/12986
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
IN COMBINATION WITH AN ELECTRICAL DEVICE FOR MAKING AND BREAKING HIGH CURRENT CARRYING CIRCUITS, A HIGH MELTING POINT NON-STICKING COMPOSITE ELECTRICAL CONTACT OF A HIGHLY CONDUCTIVE METAL WITH A RELATIVELY THIN CONTACTING SURFACE OF RUTHENIUM, THE THICKNESS OF THE RUTHENIUM LAYER BEING APPROXIMATELY .0001 INCH.
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US2057638A
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US2097140A
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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) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |