US2693525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inductive control system
Assignee: SPX Technologies Inc
•
Filing: 1951-01-17
•
Granted: 1954-11-02
•
Expires: 1971-01-17
Abstract
No abstract record available.
Inventors
- 👤 Hugh C Kendall
- 👤 Frank P Zaffarano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:45
CPC Classifications
B; B61; B61L; B61L25/00; B61L25/02; B61L25/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1710499A
Cited
US1517549A
Cited
US1658953A
Cited
US1797651A
Cited
US1773297A
Cited
US2122358A
Cited
US2184702A
Cited
US2312050A
Cited
US2421106A
Cited
US2530693A
Cited
US2535162A
Cited
US2510066A
Cited
US2454387A
Cited
US2554056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |