Patent US2992954A successfully refreshed from Google Patents.
US2992954A
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US
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Process for making electric commutators
Assignee: NCR Voyix Corp
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Filing: 1957-01-10
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Granted: 1961-07-18
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Expires: 1977-01-10
Abstract
No abstract record available.
Inventors
- 👤 Byron W Nelson
- 👤 Stephen D Marcey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:43
CPC Classifications
H; H01; H01H; H01H11/00; H01B; H01B1/00; H01B3/00; H01B3/002; H01B3/004; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1089; Y10T156/109; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1410914A
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US2104141A
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US2423869A
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US2456381A
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US2680700A
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US2807867A
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US2694028A
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US2838436A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-17 | 1965-01-16 | 1965-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-17 | 1969-01-16 | 1969-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-17 | 1973-01-16 | 1973-07-18 | $7700.00 | Window Closed / Lapsed |