US3385225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary pump
Assignee: Siemen and Hinsch GmbH
•
Filing: 1967-04-18
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Granted: 1968-05-28
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Expires: 1987-04-18
Abstract
No abstract record available.
Inventors
- 👤 Walter Antonius Hagemann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:12
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/40; F04D29/42; F04D29/426; F04D13/00; F04D13/12; F04D5/00; F04D5/002; F04D5/003; F04D5/006
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) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |