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Patent US2818272A successfully refreshed from Google Patents.
US2818272A
Expired / Lapsed
US
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Adjusting and locking device for relatively movable main and auxiliary trailer frames
Assignee: DE LAY INDUSTRIES Inc
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Filing: 1954-08-27
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Granted: 1957-12-31
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Expires: 1974-08-27
Abstract
No abstract record available.
Inventors
- 👤 Lay Manford S De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:01
CPC Classifications
B; B62; B62D; B62D63/00; B62D63/06; B62D21/00; B62D21/12; B62D21/14; B62D53/00; B62D53/04; B62D53/06; B62D53/068
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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |