US2474875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pulse echo volume compensating system
Assignee: Unisys Corp
•
Filing: 1943-01-22
•
Granted: 1949-07-05
•
Expires: 1963-01-22
Abstract
No abstract record available.
Inventors
- 👤 Gifford E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:24
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/28; G01S7/285; G01S7/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009459A
Cited
US1924156A
Cited
US2167492A
Cited
US2227598A
Cited
GB520778A
Cited
US2225046A
Cited
US2329570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |