US2424020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-phase synchronous motor of small size
Assignee: Individual
•
Filing: 1944-09-05
•
Granted: 1947-07-15
•
Expires: 1964-09-05
Abstract
No abstract record available.
Inventors
- 👤 Chatelain Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:41
CPC Classifications
H; H02; H02K; H02K16/00; H02K16/02; H02K1/00; H02K1/06; H02K1/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE19481E
Cited
GB366566A
Cited
US2012207A
Cited
US1966897A
Cited
US1962770A
Cited
US2081993A
Cited
US2122307A
Cited
US2383828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-14 | 1951-01-13 | 1951-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-14 | 1955-01-13 | 1955-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-14 | 1959-01-13 | 1959-07-15 | $7700.00 | Window Closed / Lapsed |