Patent US2887764A successfully refreshed from Google Patents.
US2887764A
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Method for making commutators
Assignee: Siemens Schuckertwerke AG
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Filing: 1953-09-01
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Granted: 1959-05-26
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Expires: 1973-09-01
Abstract
No abstract record available.
Inventors
- 👤 Knoll Karl
- 👤 Rotter Hans-Werner
- 👤 Voll Siegfried
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:21
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T29/49016
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1750305A
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US1878178A
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US2077282A
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US2084263A
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US2341235A
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US2656403A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |