US2417796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical system for doctor blade control in paper making machines
Assignee: Ecusta Paper Corp
•
Filing: 1943-03-18
•
Granted: 1947-03-18
•
Expires: 1963-03-18
Abstract
No abstract record available.
Inventors
- 👤 Happ Edwin Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:04
CPC Classifications
D; D21; D21G; D21G3/00; D21G3/02; Y; Y10; Y10S; Y10S425/00; Y10S425/235
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1618146A
Cited
US1482167A
Cited
US1644917A
Cited
US1861245A
Cited
US2058369A
Cited
US2300908A
Cited
US2232752A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-17 | 1950-09-16 | 1951-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-17 | 1954-09-16 | 1955-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-17 | 1958-09-16 | 1959-03-18 | $7700.00 | Window Closed / Lapsed |