Patent US2554239A successfully refreshed from Google Patents.
US2554239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web drying system
Assignee: CHAMPLAIN CO Inc
•
Filing: 1947-11-07
•
Granted: 1951-05-22
•
Expires: 1967-11-07
Abstract
No abstract record available.
Inventors
- 👤 Joseph R Caulfield
- 👤 Milton E Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:20
CPC Classifications
B; B41; B41F; B41F23/00; B41F23/04; B41F23/0403; B41F23/0423; B41F23/0426
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
DE459598C
Cited
US1761397A
Cited
US1779611A
Cited
US1956062A
Cited
US1996020A
Cited
US2148739A
Cited
US2229285A
Cited
US2228030A
Cited
US2333220A
Cited
US2440648A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |