US2655932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain valve
Assignee: —
•
Filing: —
•
Granted: 1953-10-20
•
Expires: 1970-10-20
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:39
CPC Classifications
F; F15; F15B; F15B11/00; F15B11/02; F16; F16K; F16K3/00; F16K3/02; F16K3/16; F16K3/18; Y; Y10; Y10T; Y10T137/00; Y10T137/6851; Y10T137/6855; Y10T137/6906; Y10T137/7036
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US726031A
Cited
US1463735A
Cited
US1586418A
Cited
US1611666A
Cited
US1737123A
Cited
US1665934A
Cited
US1776877A
Cited
US1793850A
Cited
US1954986A
Cited
US2195213A
Cited
US2231630A
Cited
US2417342A
Cited
US2487073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-19 | 1957-04-20 | 1957-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-19 | 1961-04-20 | 1961-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-19 | 1965-04-20 | 1965-10-20 | $7700.00 | Window Closed / Lapsed |