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Patent US3478689A successfully refreshed from Google Patents.
US3478689A
Expired / Lapsed
US
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Circulating pump
Assignee: Borg Warner Corp
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Filing: 1967-08-02
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Granted: 1969-11-18
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Expires: 1987-08-02
Abstract
No abstract record available.
Inventors
- 👤 Rowland E Ball
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:49
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/62; F04D29/628; F04D7/00; F04D7/02; F04D7/06; F04D13/00; F04D13/02; F04D13/06; F04D29/06; F04D29/061; F04D29/58; F04D29/5806; F04D29/586
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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |