US2730158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Straightening machines with hyperbolic rolls
Assignee: LOUVROIL MONTBARD AULNOYE
•
Filing: 1950-08-16
•
Granted: 1956-01-10
•
Expires: 1970-08-16
Abstract
No abstract record available.
Inventors
- 👤 Heintz Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:04
CPC Classifications
B; B21; B21D; B21D3/00; B21D3/02; B21D3/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US850810A
Cited
US1100695A
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US1071945A
Cited
DE508210C
Cited
US1946933A
Cited
US2347175A
Cited
US2517344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-09 | 1959-07-11 | 1960-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-09 | 1963-07-11 | 1964-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-09 | 1967-07-11 | 1968-01-10 | $7700.00 | Window Closed / Lapsed |