Patent CA671982A successfully refreshed from Google Patents.
US2519918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Current collector member
Assignee: General Electric Co
•
Filing: 1949-05-20
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Granted: 1950-08-22
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Expires: 1969-05-20
Abstract
No abstract record available.
Inventors
- 👤 Frank W Merrill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:57
CPC Classifications
H; H02; H02K; H02K13/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/9335; Y10S428/934; Y10S428/935; Y10S428/937; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12972; Y10T428/12979; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A CURRENT COLLECTOR MEMBER FORMED OF AN IRON BASE ALLOY HAVING 6 TO 13 PERCENT ALUMINUM, 11 TO 22 PERCENT NICKEL AND 5 TO 30 PERCENT COBALT.
Claim 2
Dependent Claim
27 words
A CURRENT COLLECTOR MEMBER FORMED OF AN IRON BASE ALLOY HAVING 6 TO 13 PERCENT ALUMINUM, 11 TO 22 PERCENT NICKEL AND 5 TO 30 PERCENT COBALT.
References Cited (Backward Citations)
US832742A
Cited
US1922028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |