US3555581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress
Assignee: Individual
•
Filing: 1968-06-26
•
Granted: 1971-01-19
•
Expires: 1988-06-26
Abstract
Abstract THE INVENTION RELATES TO A MATERIAL COMPRISING SEVERAL PANELS OF CELLULAR MATERIAL CONNECTED TO EACH OTHER IN A HINGED MANNER ON THEIR OPPOSITE CORNERS PLACED DIAGONALLY, SO THAT WHEN OPENED OUT THE HINGES OF THE PANELS ARE ALTERNATELY ON THE TOP AND UNDERNEATH THE MATTRESS, THE PANEL OF ONE OF THE ENDS OF THE MATTRESS BEING ABLE TO BE THINNER THAN THE OTHERS AND THE PANELS OF THE OTHER END OF THE MATTRESS ABLE TO COMPRISE A RIGID PANEL.
Inventors
- 👤 Charles Friant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:02
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/001; A47C17/00; A47C17/04; A47C17/045; A47C3/00; A47C3/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |