US3457982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporation and distillation apparatus
Assignee: Individual
•
Filing: 1967-10-05
•
Granted: 1969-07-29
•
Expires: 1987-10-05
Abstract
No abstract record available.
Inventors
- 👤 Hugo H Sephton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:20
CPC Classifications
F; F28; F28F; F28F13/00; F28F13/06; F28F13/12; B; B01; B01D; B01D1/00; B01D1/06; B01D1/10; B01D3/00; B01D3/06; B01D3/065; C; C02; C02F; C02F1/00; C02F1/02; C02F1/04; C02F1/08
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE311356C
Cited
GB189417259A
Cited
US1299793A
Cited
FR576838A
Cited
US1910242A
Cited
US1983762A
Cited
US2348328A
Cited
US2413292A
Cited
US2570213A
Cited
US2580646A
Cited
US2764233A
Cited
US3132064A
Cited
US3087533A
Cited
GB942846A
Cited
US3233389A
Cited
US3265115A
Cited
US3303106A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-28 | 1973-01-27 | 1973-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-28 | 1977-01-27 | 1977-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-28 | 1981-01-27 | 1981-07-29 | $7700.00 | Window Closed / Lapsed |