US2490594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1943-07-26
•
Granted: 1949-12-06
•
Expires: 1963-07-26
Abstract
No abstract record available.
Inventors
- 👤 Charles L Madden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:37
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/12; F16B37/122; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/968; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US823292A
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GB133093A
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US1373645A
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US1450460A
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US1587102A
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US1681048A
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US1891895A
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US2006525A
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US1966835A
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US2254502A
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US2204385A
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US2307080A
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US2223871A
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US2434832A
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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) | 1952-12-05 | 1953-06-06 | 1953-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-05 | 1957-06-06 | 1957-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-05 | 1961-06-06 | 1961-12-06 | $7700.00 | Window Closed / Lapsed |