US3089154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mattress construction having different degrees of firmness
Assignee: Individual
•
Filing: 1961-03-09
•
Granted: 1963-05-14
•
Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Truman C Boyles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:47
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/045; A47C27/0456; A47C27/06; A47C27/061; A47C27/062; Y; Y10; Y10S; Y10S5/00; Y10S5/936
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
71 words
A REVERSIBLE CONSTRUCTION COMPRISING FOUR TRANSVERSE SETS OF COIL SPRINGS, TWO OF SAID TRANSVERSE SETS PROVIDING TRANSVERSE END SECTIONS, AND THE OTHER TWO TRANSVERSE SETS OF COIL SPRINGS BEING SUPERPOSED ONE ON THE OTHER, SAID TWO SUPERPOSED TRANSVERSE SETS BEING SECURED AT TRANSVERSE ENDS TO BOTH SAID TRANSVERSE END SECTIONS, THE FIRMNESS OF ONE TRANSVERSE SET OF SUPERPOSED COIL SPRINGS BEING DIEFERENT FROM THE COIL SPRINGS OF SAID OTHER TRANSVERSE SETS
References Cited (Backward Citations)
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US2490867A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |