US2428799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distance measuring
Assignee: Individual
•
Filing: 1942-01-24
•
Granted: 1947-10-14
•
Expires: 1962-01-24
Abstract
No abstract record available.
Inventors
- 👤 Harvey C Hayes
- 👤 Horace M Trent
- 👤 Thomas F Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:02
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/06; G01S15/08; G01S15/10; G01S15/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1636502A
Cited
GB288233A
Cited
US1972889A
Cited
US2201943A
Cited
US2083344A
Cited
US2144843A
Cited
US2333688A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |