US2500730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alternating current generator
Assignee: Individual
•
Filing: 1944-09-11
•
Granted: 1950-03-14
•
Expires: 1964-09-11
Abstract
No abstract record available.
Inventors
- 👤 Edward H Yonkers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:16
CPC Classifications
H; H02; H02K; H02K19/00; H02K19/16; H02K19/18; H02K19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US324666A
Cited
US529918A
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US2108662A
Cited
US1160087A
Cited
US1211617A
Cited
US1157414A
Cited
DE434055C
Cited
US2071953A
Cited
US2146588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-13 | 1953-09-12 | 1954-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-13 | 1957-09-12 | 1958-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-13 | 1961-09-12 | 1962-03-14 | $7700.00 | Window Closed / Lapsed |