US2439741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for controlling drier discharge
Assignee: Davison Chemical Corp
•
Filing: 1943-04-28
•
Granted: 1948-04-13
•
Expires: 1963-04-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick Lucas Litty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:13
CPC Classifications
F; F26; F26B; F26B25/00; F26B25/001; F26B25/002; C; C01; C01B; C01B33/00; C01B33/113; F26B17/00; F26B17/12; F26B17/122
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE88011C
Cited
SE68686C1
Cited
US844252A
Cited
US1359301A
Cited
US1482812A
Cited
US1863803A
Cited
US1716876A
Cited
US1787878A
Cited
US1798307A
Cited
US1995293A
Cited
US2037809A
Cited
US2068574A
Cited
US2150445A
Cited
US2317379A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-13 | 1951-10-13 | 1952-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-13 | 1955-10-13 | 1956-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-13 | 1959-10-13 | 1960-04-13 | $7700.00 | Window Closed / Lapsed |