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Patent US3618146A successfully refreshed from Google Patents.
US3618146A
Expired / Lapsed
US
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Border stabilizer
Assignee: United States Bedding Co
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Filing: 1969-04-24
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Granted: 1971-11-09
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Expires: 1989-04-24
Abstract
Abstract A BORDER STABILIZER FOR SPRING MATTRESSES, CUSHIONS, ETC. IS PROVIDED IN A RESILIENT FOAM STRIP INSERTED BETWEEN ADJACENT CONVOLUTIONS OF EACH OF THE COILS IN A PERIPHERAL ROW OF COILS IN THE SPRING ASSEMBLY.
Inventors
- 👤 Robert M Ferdinand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:17
CPC Classifications
A; A47; A47C; A47C27/00; A47C27/04; A47C27/06; A47C27/066
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |