US2180050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum distillation apparatus
Assignee: Distillation Products Inc
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Filing: 1937-10-01
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Granted: 1939-11-14
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Expires: 1957-10-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C D Hickman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:23
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/228; B01D3/00; B01D3/08; B01D3/10; B01D3/12; C; C11; C11B; C11B3/00; C11B3/12; H; H01; H01J; H01J21/00; H01J21/02; H04; H04B; H04B14/00; H04B14/02; H04L; H04L1/00; H04L1/20; H04L25/00; H04L25/38; H04L25/40; H04L25/49; H04L25/493
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) | 1942-11-13 | 1943-05-15 | 1943-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-11-13 | 1947-05-15 | 1947-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-11-13 | 1951-05-15 | 1951-11-14 | $7700.00 | Window Closed / Lapsed |