Patent US2516880A successfully refreshed from Google Patents.
US2516880A
Expired / Lapsed
US
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Commutator and method of making same
Assignee: Individual
•
Filing: 1946-03-27
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Granted: 1950-08-01
•
Expires: 1966-03-27
Abstract
No abstract record available.
Inventors
- 👤 Max A Isaacson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:03
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1319988A
Cited
US840451A
Cited
US1421734A
Cited
GB196726A
Cited
US1641414A
Cited
US1677936A
Cited
US1989955A
Cited
US2104141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-07-31 | 1954-01-30 | 1954-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-07-31 | 1958-01-30 | 1958-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-07-31 | 1962-01-30 | 1962-08-01 | $7700.00 | Window Closed / Lapsed |