Patent US3143676A successfully refreshed from Google Patents.
US3143676A
Expired / Lapsed
US
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Sealing arrangement for canned pumps
Assignee: Allis Chalmers Corp
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Filing: 1960-10-17
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Granted: 1964-08-04
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Expires: 1980-10-17
Abstract
No abstract record available.
Inventors
- 👤 Ignatius J Niemkiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:10
CPC Classifications
F; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/0613; H; H02; H02K; H02K5/00; H02K5/04; H02K5/12; H02K5/128
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2669667A
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US2709965A
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US2741990A
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US2777963A
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US2777462A
Cited
US2796835A
Cited
US2939399A
Cited
US2956188A
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US2972308A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |