US2598852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed regulator for paper machinery
Assignee: Black Clawson Co
•
Filing: 1946-07-24
•
Granted: 1952-06-03
•
Expires: 1966-07-24
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Staege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:21
CPC Classifications
D; D21; D21F; D21F1/00; D21F1/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2110313A
Cited
GB473487A
Cited
US2156445A
Cited
US2283155A
Cited
US2202757A
Cited
US2297680A
Cited
US2347717A
Cited
US2456249A
Cited
US2394220A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-03 | 1955-12-03 | 1956-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-03 | 1959-12-03 | 1960-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-03 | 1963-12-03 | 1964-06-03 | $7700.00 | Window Closed / Lapsed |