Patent US2574596A successfully refreshed from Google Patents.
US2574596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultrasonic distance-measuring system
Assignee: Stromberg Carlson Corp
•
Filing: 1948-04-06
•
Granted: 1951-11-13
•
Expires: 1968-04-06
Abstract
No abstract record available.
Inventors
- 👤 Frank H Slaymaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/06; G01S15/08; G01S15/10; G01S15/14; G01S1/00; G01S1/72; Y; Y10; Y10S; Y10S367/00; Y10S367/91
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
GB406592A
Cited
US2012837A
Cited
GB469417A
Cited
US2144843A
Cited
US2250708A
Cited
US2415119A
Cited
US2404527A
Cited
GB546202A
Cited
US2371988A
Cited
US2301195A
Cited
US2429623A
Cited
US2403527A
Cited
US2428058A
Cited
US2500638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |