US2417519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plant for melting ice and preventing ice formation
Assignee: Individual
•
Filing: 1945-06-27
•
Granted: 1947-03-18
•
Expires: 1965-06-27
Abstract
No abstract record available.
Inventors
- 👤 Persson Bengt Oskar Erik
- 👤 Forslind Erik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:18
CPC Classifications
E; E02; E02B; E02B1/00; E02B1/003; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/231; B01F23/23105; B01F23/2311; B01F23/23113; B01F23/2312; B01F23/23121; B01F23/23126; B01F23/231265
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |