US3429274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diaphragm pump,in particular for pumping viscous liquids
Assignee: Akerlund and Rausing AB
•
Filing: 1967-06-08
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Granted: 1969-02-25
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Expires: 1987-06-08
Abstract
No abstract record available.
Inventors
- 👤 Erling Ingvar Nilsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:05
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/073; F01; F01L; F01L23/00; F04B43/0009; F04B43/0054; F04B9/00; F04B9/08; F04B9/12; F04B9/123; F04B9/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |