Patent US2941590A successfully refreshed from Google Patents.
US2941590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple evaporation methods
Assignee: Individual
•
Filing: 1955-03-14
•
Granted: 1960-06-21
•
Expires: 1975-03-14
Abstract
No abstract record available.
Inventors
- 👤 Rosenblad Curt Fredrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:01
CPC Classifications
D; D21; D21C; D21C11/00; D21C11/10; Y; Y10; Y10S; Y10S159/00; Y10S159/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE63200C
Cited
DE17785C
Cited
US329073A
Cited
US329072A
Cited
US1318793A
Cited
DE346294C
Cited
AT94196B
Cited
US1552534A
Cited
US1552562A
Cited
US2651356A
Cited
US2759882A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |