US2630874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siphonless trap
Assignee: Individual
•
Filing: 1949-03-29
•
Granted: 1953-03-10
•
Expires: 1969-03-29
Abstract
No abstract record available.
Inventors
- 👤 Jesse D Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/28; E03C1/294; E03C1/284; F; F16; F16K; F16K15/00; F16K15/14; F16K15/1402; F16K15/144; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4471; Y10T137/4478; Y10T137/4486; Y10T137/7722; Y10T137/7837; Y10T137/7838; Y10T137/7843
Claims Analysis
Total Claims: 0
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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) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |