Patent US3425039A successfully refreshed from Google Patents.
US2696566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric transducer system
Assignee: Individual
•
Filing: 1949-10-20
•
Granted: 1954-12-07
•
Expires: 1969-10-20
Abstract
No abstract record available.
Inventors
- 👤 Kurt S Lion
- 👤 Rd John W Sheetz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:01
CPC Classifications
G; G01; G01D; G01D5/00; G01D5/12; G01D5/14; G01D5/18; G01B; G01B7/00; G01B7/001; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1261; Y10T74/1275
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US781603A
Cited
US1144596A
Cited
US1627231A
Cited
US1768660A
Cited
US2004368A
Cited
US2152639A
Cited
US2149847A
Cited
US2272794A
Cited
US2544078A
Cited
US2602914A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-06 | 1958-06-07 | 1958-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-06 | 1962-06-07 | 1962-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-06 | 1966-06-07 | 1966-12-07 | $7700.00 | Window Closed / Lapsed |