US2616077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radio echo system for mapping contours
Assignee: Individual
•
Filing: 1947-05-20
•
Granted: 1952-10-28
•
Expires: 1967-05-20
Abstract
No abstract record available.
Inventors
- 👤 William T Holser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:27
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/04; G01C; G01C11/00; G01S1/00; G01S1/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2407198A
Cited
US2426189A
Cited
US2323534A
Cited
US2428351A
Cited
US2421747A
Cited
US2446668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |