Patent US3394660A successfully refreshed from Google Patents.
US3394660A
Expired / Lapsed
US
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Double cavity pump for laundry equipment having integral sealing means
Assignee: Whirlpool Corp
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Filing: 1966-05-19
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Granted: 1968-07-30
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Expires: 1986-05-19
Abstract
No abstract record available.
Inventors
- 👤 Ohmann William
- 👤 Harbor Benton
- 👤 Edward E Wiessner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:23
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/12; F04D13/14; D; D06; D06F; D06F39/00; D06F39/08; D06F39/083; D06F39/085
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB413573A
Cited
US2210723A
Cited
US2936715A
Cited
US2924959A
Cited
GB923098A
Cited
US2997958A
Cited
US3213976A
Cited
US3301188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-30 | 1972-01-29 | 1972-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-30 | 1976-01-29 | 1976-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-30 | 1980-01-29 | 1980-07-30 | $7700.00 | Window Closed / Lapsed |