US3521373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and plant for the vacuum drying of wood in the form of planks or laths
Assignee: Individual
•
Filing: 1968-07-15
•
Granted: 1970-07-21
•
Expires: 1988-07-15
Abstract
No abstract record available.
Inventors
- 👤 Vincenzo Pagnozzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:32
CPC Classifications
F; F26; F26B; F26B5/00; F26B5/04; F26B5/044; F26B3/00; F26B3/18; F26B3/20; F26B2210/00; F26B2210/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191200094A
Cited
US1197097A
Cited
US1333848A
Cited
GB141727A
Cited
US1778079A
Cited
GB478341A
Cited
US2296546A
Cited
US3135589A
Cited
US3259991A
Cited
US3271874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-20 | 1974-01-19 | 1974-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-20 | 1978-01-19 | 1978-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-20 | 1982-01-19 | 1982-07-21 | $7700.00 | Window Closed / Lapsed |