US2473504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentric line oscillator
Assignee: Individual
•
Filing: 1943-06-18
•
Granted: 1949-06-21
•
Expires: 1963-06-18
Abstract
No abstract record available.
Inventors
- 👤 Clarence A Boddie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:46
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/18; H03B5/1817; H03B5/1835
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1979668A
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US2169396A
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US2125280A
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US2207846A
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US2287845A
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US2272211A
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US2284405A
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US2333295A
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US2329779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-06-20 | 1952-12-20 | 1953-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-06-20 | 1956-12-20 | 1957-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-06-20 | 1960-12-20 | 1961-06-21 | $7700.00 | Window Closed / Lapsed |