US3790150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical support system
Assignee: Deres Development Corp
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Filing: 1970-09-25
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Granted: 1974-02-05
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Expires: 1990-09-25
Abstract
Abstract A NON-LIQUID MECHANICAL SUPPORT SYSTEM HAVING A DISPLACEABLE SUPPORT SURFACE, COMPRISING DISPLACEABLE SUPPORT MEANS, TO SIMULATE A LIQUID SUPPORT SYSTEM (SUCH AS A WATER CONTAINER AND TO HAVE SIMILAR PROPERTIES OF LOAD ISPLACEMENT FEATURING A TREE-LIKE ARRANGEMENT OF BRANCHED LEVERS FORMING A PLURALITY OF DISLACEABLE LOAD SUPPORT POINTS. D R A W I N G
Inventors
- 👤 D Lippert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:47
CPC Classifications
A; A42; A42B; A42B3/00; A42B3/04; A42B3/10; A42B3/12; A43; A43B; A43B17/00; A43B17/02; A43B7/00; A43B7/14; A43B7/1405; A43B7/1455; A43B7/1464; A47; A47C; A47C23/00; A47C23/002; A47C7/00; A47C7/02; A47C7/024; A47C7/029; A47C7/14; A47C7/36; A47C7/40; A47C7/405; A61; A61G; A61G13/00; A61G13/009; A61G7/00; A61G7/05; A61G7/057; A61G7/0573; B; B65; B65D; B65D81/00; B65D81/02; B65D81/05; B65D81/07; B65D81/107; B65D81/1075; A61G5/00; A61G5/06; A61G5/063; A61G5/065
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |