US2620766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generation and transmission of sound pulses
Assignee: SONIC RES CORP
•
Filing: 1950-03-20
•
Granted: 1952-12-09
•
Expires: 1970-03-20
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Seavey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:29
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/02; G01V1/04; G01V1/047; G01V1/143; G01V1/147; Y; Y10; Y10S; Y10S181/00; Y10S181/40; Y10S181/401
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-09 | 1956-06-09 | 1956-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-09 | 1960-06-09 | 1960-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-09 | 1964-06-09 | 1964-12-09 | $7700.00 | Window Closed / Lapsed |