US2632395A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange assembly for centrifugal pumps
Assignee: Phillips Petroleum Co
•
Filing: 1948-06-02
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Granted: 1953-03-24
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Expires: 1968-06-02
Abstract
No abstract record available.
Inventors
- 👤 Gerald P Jennings
- 👤 Leonard P Meade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:00
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/08; F04D29/10; F04D29/106; F04D29/108; F04D29/58; F04D29/586; F04D29/588; Y; Y10; Y10S; Y10S277/00; Y10S277/93
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) | 1956-03-23 | 1956-09-22 | 1957-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-23 | 1960-09-22 | 1961-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-23 | 1964-09-22 | 1965-03-24 | $7700.00 | Window Closed / Lapsed |