Patent US3021442A successfully refreshed from Google Patents.
US3021442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamoelectric machine
Assignee: Ford Motor Co
•
Filing: 1958-12-26
•
Granted: 1962-02-13
•
Expires: 1978-12-26
Abstract
No abstract record available.
Inventors
- 👤 Joseph J Rodak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:02
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
BE531180A
Cited
US1267983A
Cited
US1998087A
Cited
US2419156A
Cited
US2488365A
Cited
US2881337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |