US2618844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of building commutators
Assignee: Westinghouse Electric Corp
•
Filing: 1950-06-24
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Granted: 1952-11-25
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Expires: 1970-06-24
Abstract
No abstract record available.
Inventors
- 👤 Willard L Wright
- 👤 Erich O Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:09
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-25 | 1956-05-26 | 1956-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-25 | 1960-05-26 | 1960-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-25 | 1964-05-26 | 1964-11-25 | $7700.00 | Window Closed / Lapsed |