Patent US2660042A successfully refreshed from Google Patents.
US3573154A
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US
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Cork underlayer material
Assignee: Connor Forest Industries
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Filing: 1967-04-03
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Granted: 1971-03-30
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Expires: 1987-04-03
Abstract
Abstract DISCLOSED HEREIN IS AN UNDERLAYER MATERIAL FOR FLOORING INSTALLATIONS OR FLOOR COVERINGS, WHICH MATERIAL IS IN ROLL FORM AND COMPRISES A LAYER OF NATURAL CORK BONDED TO AN ASPHALT IMPREGNATED SHEET. ALSO DISCLOSED HEREIN IS A METHOD OF PRODUCING THE UNDERLAYER MATERIAL.
Inventors
- 👤 Henrv G Tank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:45
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/02; E04C2/10; E04C2/16; E04F; E04F15/00; E04F15/18; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/3167; Y10T428/31815
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) | 1974-03-29 | 1974-09-28 | 1975-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-29 | 1978-09-28 | 1979-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-29 | 1982-09-28 | 1983-03-30 | $7700.00 | Window Closed / Lapsed |