US2711567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold clamping apparatus
Assignee: Individual
•
Filing: 1952-12-24
•
Granted: 1955-06-28
•
Expires: 1972-12-24
Abstract
No abstract record available.
Inventors
- 👤 Otto P Knapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:07
CPC Classifications
B; B22; B22D; B22D17/00; B22D17/20; B22D17/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1394246A
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US2094079A
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US2137217A
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US2244123A
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US2289928A
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US2547081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |