Patent US2914640A successfully refreshed from Google Patents.
US2914640A
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Electrical contacts
Assignee: General Electric Co
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Filing: 1956-10-25
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Granted: 1959-11-24
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Expires: 1976-10-25
Abstract
No abstract record available.
Inventors
- 👤 Grattidge Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:37
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H2001/0208; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12361; Y10T428/12493; Y10T428/12771; Y10T428/12806; Y10T428/12826; Y10T428/1284
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
MATING ELECTRICAL CONTACTS OF THE RELATIVELY MOVABLE ARCING TYPE, EACH COMPRISING A BODY OF TUNGSTEN AND A CONTACTING SURFACE CONSISTING OF A ELECTROPLATE FILM OF RHENIUM.
Claim 2
Dependent Claim
26 words
MATING ELECTRICAL CONTACTS OF THE RELATIVELY MOVABLE ARCING TYPE, EACH COMPRISING A BODY OF TUNGSTEN AND A CONTACTING SURFACE CONSISTING OF A ELECTROPLATE FILM OF RHENIUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-23 | 1963-05-25 | 1963-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-23 | 1967-05-25 | 1967-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-23 | 1971-05-25 | 1971-11-24 | $7700.00 | Window Closed / Lapsed |