Patent US3686927A successfully refreshed from Google Patents.
US2673167A
Expired / Lapsed
US
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Electric contact
Assignee: C S BRAININ Co
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Filing: 1945-12-28
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Granted: 1954-03-23
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Expires: 1965-12-28
Abstract
No abstract record available.
Inventors
- 👤 Vines Raymond Francis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:48
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; H01H1/02372; H01H1/02374; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/1266
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
AN ELECTRICAL CONTACT COMPRISED OF A SILVERCADMIUM ALLOY CONTAINING 5% TO 15% CADMIUM, BALANCED SILVER, SAID CONTACT HAVING A WEAR AND ARC RESISTANT AREA UNDERLYING THE CONTACT MAKING FACE THEREOF, SAID AREA CONSISTING OF SUBSTANTIALLY PURE SILVER CONTAINING PRECIPITATED CADMIUM OXIDE PARTICLES DISPERSED THERETHROUGH WITHIN THE GRAINS AND ALONG THE GRAIN BOUNDARIES AND HAVING A DEPT WITHIN THE RANGE .006 TO .040 INCH.
References Cited (Backward Citations)
US1720000A
Cited
GB324028A
Cited
US1874127A
Cited
US1940962A
Cited
US2145690A
Cited
US2539298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |