Patent US2432070A successfully refreshed from Google Patents.
US2432070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synchronous motor
Assignee: Individual
•
Filing: 1944-12-18
•
Granted: 1947-12-02
•
Expires: 1964-12-18
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Sanborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:12
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/02; H02K19/04; H02K19/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1495827A
Cited
US1818330A
Cited
US1959391A
Cited
GB451447A
Cited
US2128719A
Cited
US2169901A
Cited
US2248285A
Cited
GB558022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-01 | 1951-06-02 | 1951-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-01 | 1955-06-02 | 1955-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-01 | 1959-06-02 | 1959-12-02 | $7700.00 | Window Closed / Lapsed |