Patent US3072950A successfully refreshed from Google Patents.
US3072950A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction washing appliance
Assignee: Hoover Co
•
Filing: 1960-07-11
•
Granted: 1963-01-15
•
Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Jack E Duff
- 👤 Mary C Pavlic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:10
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/408; A47L11/4088; A47L11/29; A47L11/30; A47L11/4036; A47L11/4044; A47L11/4083
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A FLOOR SCRUBBING APPLIANCE COMPRISING, A SUCTION NOZZLE, A SOURCE OF SUCTION, A SUCTION LINE INCLUDING A WATER SEPARATOR CONNECTING SAID NOZZLE TO SAID SOURCE OF SUCTION, A WALLED CONTAINER ADAPTED TO CONTAIN A LIQUID ANTIFOAMANT POSITIONED IN SAID SUCTION LINE AHEAD OF SAID SEPARATOR, AND ASPIRATING MEANS ON SAID WALLED CONTAINER ADAPTED TO DISPENSE ANTIFOAMANT FROM SAID CONTAINER INTO SAID SUCTION LINE IN RESPONSE TO SUCTION PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |