Patent US4070725A successfully refreshed from Google Patents.
US4070725A
Expired / Lapsed
US
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Combined pump and siphon
Assignee: Cornelius Engineering Center Inc
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Filing: 1975-11-07
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Granted: 1978-01-31
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Expires: 1995-11-07
Abstract
No abstract record available.
Inventors
- 👤 F Austin
- 👤 R Cornelius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:35
CPC Classifications
F; F04; F04B; F04B9/00; F04B9/14; B; B05; B05B; B05B15/00; B05B15/60; B05B15/65; B05B9/00; B05B9/03; B05B9/04; B05B9/0403; B05B9/0426; F04B43/00; F04B43/12; F04B43/1253; F04B43/1276
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |