US2838253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll unwinding control system
Assignee: H G Weber & Co
•
Filing: 1955-05-10
•
Granted: 1958-06-10
•
Expires: 1975-05-10
Abstract
No abstract record available.
Inventors
- 👤 Paul W Jacobsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:26
CPC Classifications
B; B65; B65H; B65H23/00; B65H23/04; B65H23/06; B65H23/063
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1974126A
Cited
US2631791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |