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US2547656A
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Hydraulic hold-down
Assignee: Niagara Machine and Tool Works
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Filing: 1948-05-27
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Granted: 1951-04-03
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Expires: 1968-05-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick E Munschauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:00
CPC Classifications
B; B23; B23D; B23D33/00; B23D33/08; Y; Y10; Y10T; Y10T83/00; Y10T83/566; Y10T83/5669; Y10T83/5724; Y10T83/606
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US616801A
Cited
US2323770A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |