Patent US2497516A successfully refreshed from Google Patents.
US2497516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical winding
Assignee: Metropolitan Engineering Co
•
Filing: 1944-04-22
•
Granted: 1950-02-14
•
Expires: 1964-04-22
Abstract
No abstract record available.
Inventors
- 👤 George H Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:12
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US617067A
Cited
US665573A
Cited
US1105385A
Cited
US1242649A
Cited
US1394044A
Cited
US1471096A
Cited
US1449206A
Cited
US1588512A
Cited
US2170700A
Cited
US2255657A
Cited
US2325810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-02-13 | 1953-08-15 | 1954-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-02-13 | 1957-08-15 | 1958-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-02-13 | 1961-08-15 | 1962-02-14 | $7700.00 | Window Closed / Lapsed |