US2644484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiport valve
Assignee: Elgin Softener Corp
•
Filing: 1944-12-29
•
Granted: 1953-07-07
•
Expires: 1964-12-29
Abstract
No abstract record available.
Inventors
- 👤 Mansen Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:10
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/02; F16K3/04; F16K3/10; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86911; Y10T137/87265; Y10T137/87378; Y10T137/8741; Y10T137/87491; Y10T137/877; Y10T137/87829; Y10T137/87837; Y10T137/87861; Y10T137/87917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1988957A
Cited
US2093692A
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US2047131A
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USRE23076E
Cited
US2235287A
Cited
US2262224A
Cited
US2209993A
Cited
US2328008A
Cited
US2398437A
Cited
US2428410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-07-06 | 1957-01-05 | 1957-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-07-06 | 1961-01-05 | 1961-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-07-06 | 1965-01-05 | 1965-07-07 | $7700.00 | Window Closed / Lapsed |