Patent US1672583A successfully refreshed from Google Patents.
US1672583A
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Separation vat
Assignee: TRAVERS LEWIS PROCESS CORP
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Filing: 1925-07-20
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Granted: 1928-06-05
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Expires: 1945-07-20
Abstract
No abstract record available.
Inventors
- 👤 John T Travers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:09
CPC Classifications
C; C11; C11B; C11B13/00; B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208; B01D17/0211; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/74
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) | 1931-06-05 | 1931-12-05 | 1932-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-06-05 | 1935-12-05 | 1936-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-06-05 | 1939-12-05 | 1940-06-05 | $7700.00 | Window Closed / Lapsed |