US3788941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable floor and wall surface coverings
Assignee: WR Grace and Co Conn
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Filing: 1971-08-02
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Granted: 1974-01-29
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Expires: 1991-08-02
Abstract
Abstract SUBFLOORS AND WALLS FOR EXAMPLE CAN BE COVERED WITH A SURFACE COVERING WHICH IS EASILY REMOVABLE AT A LATER TIME BY ADHERING A RELEASE COMPOSITION-COATED FLEXIBLE SHEET MATERIAL, FOR EXAMPLE, AN ELASTOMER-IMPREGNATED PAPER SHEET, RELEASE-COATED SIDE UP TO THE SUB-FLOOR OR WALL AND THEN ADHESIVELY SECURING THE SURFACE COVERING TO THE RELEASE COATED SHEET.
Inventors
- 👤 J Kupits
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:33
CPC Classifications
D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; D06N2203/00; D06N2203/02; D06N2203/04; D06N2203/041; D06N2203/042; D06N2203/045; D06N2203/048; D06N2203/08; D06N2209/00; D06N2209/16; D06N2209/1664; D06N2211/00; D06N2211/06; D06N2213/00; D06N2213/06; D06N2213/066; Y; Y10; Y10T; Y10T428/00; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/28; Y10T428/2839; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31786; Y10T428/31794; Y10T428/31855; Y10T428/3188; Y10T428/31895
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) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |