US2689952A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for remotely transferring voltages as a measure of antenna beam scanning in radar apparatus
Assignee: Gilfillan Bros Inc
•
Filing: 1950-12-29
•
Granted: 1954-09-21
•
Expires: 1970-12-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Thomas J Johnson
- 👤 Alvin G Van Alstyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:27
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/02; G01S1/08; G01S1/44; G01S1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2412670A
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US2552172A
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US2554172A
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US2552303A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-20 | 1958-03-22 | 1958-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-20 | 1962-03-22 | 1962-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-20 | 1966-03-22 | 1966-09-21 | $7700.00 | Window Closed / Lapsed |