US2960749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanding and contracting rolls
Assignee: Mount Hope Machinery Ltd
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Filing: 1958-08-20
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Granted: 1960-11-22
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Expires: 1978-08-20
Abstract
No abstract record available.
Inventors
- 👤 John D Robertson
- 👤 John N Basic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:34
CPC Classifications
B; B21; B21F; B21F3/00; B21F3/02; B21F3/04; B21F15/00; B21F15/02; B21F15/06; B21F15/08; B21F17/00; B65; B65G; B65G39/00; B65G39/02; B65G39/06; D; D06; D06C; D06C3/00; D06C3/06; D06C3/067; D21; D21F; D21F1/00; D21F1/36; D21F1/365; F; F16; F16C; F16C13/00; F16C13/003; F16C2340/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |