US2542028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for high-frequency retorting
Assignee: Individual
•
Filing: 1946-11-01
•
Granted: 1951-02-20
•
Expires: 1966-11-01
Abstract
No abstract record available.
Inventors
- 👤 Victor M Hodge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:13
CPC Classifications
C; C10; C10B; C10B19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1384689A
Cited
US1622722A
Cited
FR582347A
Cited
GB254115A
Cited
US1972050A
Cited
GB517798A
Cited
US2333412A
Cited
US2404474A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-19 | 1954-08-21 | 1955-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-19 | 1958-08-21 | 1959-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-19 | 1962-08-21 | 1963-02-20 | $7700.00 | Window Closed / Lapsed |