Patent US2549254A successfully refreshed from Google Patents.
US2549254A
Expired / Lapsed
US
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Vacuum hold-down for machines operating on flat stock
Assignee: WASHINGTON VENEER Co
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Filing: 1946-05-18
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Granted: 1951-04-17
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Expires: 1966-05-18
Abstract
No abstract record available.
Inventors
- 👤 Harold A Smyth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:23
CPC Classifications
B; B27; B27C; B27C1/00; B27C1/005; B25; B25B; B25B11/00; B25B11/005; Y; Y10; Y10T; Y10T83/00; Y10T83/748; Y10T83/7487
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) | 1954-04-16 | 1954-10-16 | 1955-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-16 | 1958-10-16 | 1959-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-16 | 1962-10-16 | 1963-04-17 | $7700.00 | Window Closed / Lapsed |