US2634495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making commutators
Assignee: Robert Bosch GmbH
•
Filing: 1949-03-01
•
Granted: 1953-04-14
•
Expires: 1969-03-01
Abstract
No abstract record available.
Inventors
- 👤 Callsen Albert
- 👤 Grozinger Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:55
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/06; H01R43/08; Y; Y10; Y10S; Y10S200/00; Y10S200/07; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1808750A
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US1974251A
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US1974252A
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US2038419A
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US2058109A
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US2251326A
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US2211979A
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US2236257A
Cited
US2247199A
Cited
US2251074A
Cited
US2451500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-13 | 1956-10-13 | 1957-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-13 | 1960-10-13 | 1961-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-13 | 1964-10-13 | 1965-04-14 | $7700.00 | Window Closed / Lapsed |