US3385321A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiport valve
Assignee: Sealed Unit Parts Co Inc
•
Filing: 1965-08-26
•
Granted: 1968-05-28
•
Expires: 1985-08-26
Abstract
No abstract record available.
Inventors
- 👤 Ehrens Henry
- 👤 Wiener Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:56
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/072; F16K11/074; F16K11/0743; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3126132A
Cited
US661712A
Cited
US681183A
Cited
US903175A
Cited
US2521490A
Cited
US2974681A
Cited
US3026899A
Cited
US3175573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |