US2577536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic range tracking circuit
Assignee: Individual
•
Filing: 1944-05-05
•
Granted: 1951-12-04
•
Expires: 1964-05-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Edward F Macnichol
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:56
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; G01S13/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1924174A
Cited
US2304545A
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US2403975A
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US2445584A
Cited
US2404399A
Cited
US2422074A
Cited
US2495753A
Cited
US2433667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-03 | 1955-06-04 | 1955-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-03 | 1959-06-04 | 1959-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-03 | 1963-06-04 | 1963-12-04 | $7700.00 | Window Closed / Lapsed |