Patent US6175588B1 successfully refreshed from Google Patents.
US3018737A
Expired / Lapsed
US
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Pump structure
Assignee: Individual
•
Filing: 1958-01-24
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Granted: 1962-01-30
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Expires: 1978-01-24
Abstract
No abstract record available.
Inventors
- 👤 Ernest E Cook
- 👤 Harry J Sadler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/10; F04B53/102; F04B53/1022; F04B1/00; F04B1/12; F04B1/122; F04B1/124; F04B1/126; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18296; Y10T74/18336
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US695731A
Cited
FR486280A
Cited
AT79805B
Cited
DE324707C
Cited
GB484142A
Cited
US2302995A
Cited
US2881973A
Cited
US2877653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-29 | 1965-07-31 | 1966-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-29 | 1969-07-31 | 1970-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-29 | 1973-07-31 | 1974-01-30 | $7700.00 | Window Closed / Lapsed |