US2459622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for drying sheet materials by high-frequency electric fields
Assignee: Fredk H Levey Co Inc
•
Filing: 1944-03-18
•
Granted: 1949-01-18
•
Expires: 1964-03-18
Abstract
No abstract record available.
Inventors
- 👤 Wallace P Cohoe
- 👤 Wilson Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:39
CPC Classifications
B; B41; B41F; B41F23/00; B41F23/04; B41F23/0486; F; F26; F26B; F26B3/00; F26B3/32; F26B3/34
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US963942A
Cited
US1386645A
Cited
US1624029A
Cited
US1668943A
Cited
US2042145A
Cited
US2000684A
Cited
US2231457A
Cited
US2109323A
Cited
US2212522A
Cited
US2226871A
Cited
US2223270A
Cited
US2273423A
Cited
US2228136A
Cited
US2288035A
Cited
US2319174A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-18 | 1952-07-19 | 1953-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-18 | 1956-07-19 | 1957-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-18 | 1960-07-19 | 1961-01-18 | $7700.00 | Window Closed / Lapsed |