Patent CA2102019A1 successfully refreshed from Google Patents.
US2837648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically controllable inductor method and apparatus
Assignee: C G S LABORATORIES Inc
•
Filing: 1954-09-20
•
Granted: 1958-06-03
•
Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 William D Gabor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
H; H03; H03B; H03B23/00; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/18
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US428620A
Cited
US1412933A
Cited
US1140920A
Cited
US1743737A
Cited
US2466028A
Cited
US2598467A
Cited
US2462423A
Cited
US2536260A
Cited
US2648824A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-02 | 1961-12-02 | 1962-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-02 | 1965-12-02 | 1966-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-02 | 1969-12-02 | 1970-06-03 | $7700.00 | Window Closed / Lapsed |