US3733176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for cleaning carpets and like materials
Assignee: Individual
•
Filing: 1970-12-28
•
Granted: 1973-05-15
•
Expires: 1990-12-28
Abstract
Abstract A CARPET AND RUG CLEANING METHOD INVOLVING SUCCESSIVE ROLLING, SPRAYING, AND NEARLY SIMULTANEOUS EXPOSURE TO VACUUM AND TO HEAT. METHOD ACHIEVES FASTER DRYING THAN HERETOFOR WAS COMMON, WITH MINIMAL WICKING. PRE-ROLLING, SPRAYING UNDER PRESSURE WITH THE SPRAY IMPINGING THE CARPET AT AN ACUTE ANGLE SO AS TO LOOSEN RATHER THAN TO IMBED SOIL TOGETHER WITH APPLICATION OF THE VACUUM, PRESSURE, AND HEAT, USED TO ACHIEVE THE FOREGOING.
Inventors
- 👤 W Wisdom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:20
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4044; A47L11/34; A47L11/408; A47L11/4088; A47L9/00; A47L9/02
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) | 1976-05-14 | 1976-11-13 | 1977-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-14 | 1980-11-13 | 1981-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-14 | 1984-11-13 | 1985-05-15 | $7700.00 | Window Closed / Lapsed |