US2774247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive for metal forming machine
Assignee: Individual
•
Filing: 1952-02-26
•
Granted: 1956-12-18
•
Expires: 1972-02-26
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Knost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:38
CPC Classifications
F; F16; F16H; F16H13/00; F16H13/02; B; B21; B21D; B21D22/00; B21D22/14; B21D22/18; F16H1/00; F16H1/006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US100977A
Cited
US312780A
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US373777A
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US508360A
Cited
US1043012A
Cited
US1235734A
Cited
US1965533A
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US2227789A
Cited
US2309344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |