Patent US2107386A successfully refreshed from Google Patents.
Patent US2398437A successfully refreshed from Google Patents.
US2398437A
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Multiport valve
Assignee: Elgin Softener Corp
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Filing: 1942-08-24
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Granted: 1946-04-16
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Expires: 1962-08-24
Abstract
No abstract record available.
Inventors
- 👤 Chester T Mcgill
- 👤 Wessel De Wayne
- 👤 Morris W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:22
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0743; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87056; Y10T137/87072; Y10T137/877; Y10T137/87708; Y10T137/8774; Y10T137/87748
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-04-15 | 1949-10-15 | 1950-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-15 | 1953-10-15 | 1954-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-15 | 1957-10-15 | 1958-04-16 | $7700.00 | Window Closed / Lapsed |