US2476469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable antenna
Assignee: Individual
•
Filing: 1945-04-30
•
Granted: 1949-07-19
•
Expires: 1965-04-30
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:25
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/08; H01Q1/10; H01Q9/00; H01Q9/04; H01Q9/06; H01Q9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1801042A
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US1911234A
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US1918180A
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US2028498A
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US2199050A
Cited
US2237778A
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US2255520A
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US2272431A
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US2248335A
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US2419311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |