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US2993446A
Expired / Lapsed
US
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Diaphragm piston pump
Assignee: PLEUGER
•
Filing: 1958-05-27
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Granted: 1961-07-25
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Expires: 1978-05-27
Abstract
No abstract record available.
Inventors
- 👤 Pleuger Friedrich Wilhelm
- 👤 Gohring Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:19
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1853147A
Cited
US1650377A
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US2126310A
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US2478568A
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US2578746A
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US2634687A
Cited
US2703055A
Cited
US2861518A
Cited
US2919650A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |