US2425500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valved coupling
Assignee: Individual
•
Filing: 1943-07-07
•
Granted: 1947-08-12
•
Expires: 1963-07-07
Abstract
No abstract record available.
Inventors
- 👤 Wiggins Irene Lane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:30
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/127; F16L37/28; F16L37/30; F16L37/32; F16L37/38; F16L37/40; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949; Y10T137/87957
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US109695A
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US879880A
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US1465648A
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US1565349A
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US1559178A
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US1680138A
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US1916284A
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US2086569A
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US2135221A
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US2135222A
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US2255333A
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US2279146A
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US2322449A
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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) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |