US3493802A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical machine
Assignee: Robert Bosch GmbH
•
Filing: 1968-09-26
•
Granted: 1970-02-03
•
Expires: 1988-09-26
Abstract
No abstract record available.
Inventors
- 👤 Otto Barthruff
- 👤 Walter Ruehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:23
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04; H02K5/14; H02K5/143; H02K5/148
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1935789A
Cited
US1923864A
Cited
US1991356A
Cited
US2275613A
Cited
US2584214A
Cited
US2870354A
Cited
US3026432A
Cited
US3138728A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |