Patent US3289232A successfully refreshed from Google Patents.
US3289232A
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US
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Pump control, check valve and drive coupling means for shampooing and scrubbing device
Assignee: Hoover Co
•
Filing: 1964-12-28
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Granted: 1966-12-06
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Expires: 1984-12-28
Abstract
No abstract record available.
Inventors
- 👤 Justice H Beach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:15
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4063; A47L11/4069; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/162; A47L11/1625; A47L11/29; A47L11/30; A47L11/32; A47L11/325; A47L11/4036; A47L11/4038; F; F04; F04B; F04B43/00; F04B43/12; F04B43/123; F04B43/1253; F04B43/1284
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2003215A
Cited
US2098886A
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US2434802A
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US2585863A
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US2731659A
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US3056151A
Cited
US3140666A
Cited
US3153799A
Cited
US3212117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |