US3420745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston-cylinder vacuum distillation apparatus
Assignee: Individual
•
Filing: 1966-07-05
•
Granted: 1969-01-07
•
Expires: 1986-07-05
Abstract
No abstract record available.
Inventors
- 👤 William B Schlueter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:45
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/043; B; B01; B01D; B01D3/00; B01D3/10; C02F1/14; Y; Y02; Y02A; Y02A20/00; Y02A20/20; Y02A20/208; Y02A20/212; Y10; Y10S; Y10S159/00; Y10S159/902; Y10S159/903; Y10S203/00; Y10S203/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US956097A
Cited
US2395004A
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US2339862A
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US2375640A
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US2368665A
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US2831665A
Cited
US3190817A
Cited
US3209812A
Cited
US3290229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-07 | 1972-07-08 | 1973-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-07 | 1976-07-08 | 1977-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-07 | 1980-07-08 | 1981-01-07 | $7700.00 | Window Closed / Lapsed |