US3512024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frameless permissible dynamoelectric machine
Assignee: Westinghouse Air Brake Co
•
Filing: 1968-08-19
•
Granted: 1970-05-12
•
Expires: 1988-08-19
Abstract
No abstract record available.
Inventors
- 👤 Paul H Papa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:32
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/14; H02K5/00; H02K5/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1921845A
Cited
US1851572A
Cited
US2393065A
Cited
US2736826A
Cited
GB842316A
Cited
GB824439A
Cited
US2931927A
Cited
US2947892A
Cited
FR90916E
Cited
GB1114413A
Cited
DE1218599B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |