US3044491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiport switching valve
Assignee: Texas Instruments Inc
•
Filing: 1958-07-29
•
Granted: 1962-07-17
•
Expires: 1978-07-29
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Sangster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:38
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; F16K11/07; F16K11/0712; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1145128A
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US1231733A
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US2524142A
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US2485504A
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US2577999A
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GB672969A
Cited
US2645450A
Cited
US2719530A
Cited
US2747611A
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FR64738E
Cited
US2858851A
Cited
US2837374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |