Patent US3447470A successfully refreshed from Google Patents.
US3447470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pumps
Assignee: ZF International UK Ltd
•
Filing: 1967-03-03
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Granted: 1969-06-03
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Harry Simister Bottoms
- 👤 Geoffrey Arthur Lewis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:55
CPC Classifications
F; F04; F04D; F04D15/00; F04D15/0005; F04D15/0022; F05; F05D; F05D2250/00; F05D2250/50; F05D2250/52; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7782
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) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |