US3822176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet underlay
Assignee: Individual
•
Filing: 1973-01-08
•
Granted: 1974-07-02
•
Expires: 1993-01-08
Abstract
Abstract CARPET UNDERLAY COMPRISING A SHEET OF CREPED PAPER SECURED TO A SHEET OF CELLULAR RUBBER, AND METHODS OF MAKING THIS UNDERLAY, ARE DISCLOSED.
Inventors
- 👤 A Harrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:14
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/04; B32B25/06; B32B27/00; B32B29/00; B32B29/002; B32B29/007; B32B29/02; B32B5/00; B32B5/02; B32B5/022; B32B5/18; B32B7/00; B32B7/04; B32B7/12; D; D04; D04H; D04H13/00; B32B2266/00; B32B2266/02; B32B2266/0207; B32B2471/00; B32B2471/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T428/24455; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249984
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) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |