Patent US2425500A successfully refreshed from Google Patents.
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
2026-10-23 05:47
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
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US109695A
Cited
US879880A
Cited
US1465648A
Cited
US1565349A
Cited
US1559178A
Cited
US1680138A
Cited
US1850879A
Cited
US1916284A
Cited
US2086569A
Cited
US2135221A
Cited
US2135222A
Cited
US2255333A
Cited
US2279146A
Cited
US2322449A
Cited
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 |