US3048815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low frequency transducer
Assignee: Individual
•
Filing: 1952-11-05
•
Granted: 1962-08-07
•
Expires: 1972-11-05
Abstract
No abstract record available.
Inventors
- 👤 Edward G Thurston
- 👤 Donald W Kuester
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:11
CPC Classifications
H; H01; H01G; H01G7/00; H01G7/02; G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1409341A
Cited
US2105010A
Cited
US2126436A
Cited
US2421026A
Cited
US2576155A
Cited
US2565159A
Cited
US3002179A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-06 | 1966-02-05 | 1966-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-06 | 1970-02-05 | 1970-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-06 | 1974-02-05 | 1974-08-07 | $7700.00 | Window Closed / Lapsed |