Patent US2793818A successfully refreshed from Google Patents.
US2793818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for winding coils
Assignee: BOESCH Manufacturing Co
•
Filing: 1954-02-17
•
Granted: 1957-05-28
•
Expires: 1974-02-17
Abstract
No abstract record available.
Inventors
- 👤 William W Clarke
- 👤 Henry S Walendzik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:03
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US379887A
Cited
US491262A
Cited
US583176A
Cited
US802359A
Cited
US1855285A
Cited
US2171119A
Cited
US2672297A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-05-27 | 1960-11-26 | 1961-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-27 | 1964-11-26 | 1965-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-27 | 1968-11-26 | 1969-05-28 | $7700.00 | Window Closed / Lapsed |