US3468761A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Staged vapor-liquid operated ejector arrangement for multi-stage evaporator system
Assignee: Westinghouse Electric Corp
•
Filing: 1966-09-02
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Granted: 1969-09-23
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Expires: 1986-09-02
Abstract
No abstract record available.
Inventors
- 👤 Ernest F Stalcup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:24
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/06; B; B01; B01D; B01D3/00; B01D3/06; B01D3/065; Y; Y02; Y02A; Y02A20/00; Y02A20/124; Y10; Y10S; Y10S159/00; Y10S159/16; Y10S203/00; Y10S203/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2501276A
Cited
US2759882A
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US2893926A
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US3119752A
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GB958522A
Cited
US3259552A
Cited
US3288685A
Cited
GB1028516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |