US3391643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sub-surface pump
Assignee: Warren Pumps LLC
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Filing: 1966-02-07
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Granted: 1968-07-09
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Expires: 1986-02-07
Abstract
No abstract record available.
Inventors
- 👤 Albert A Zalis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:06
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0034; F04C15/0038; F04C2/00; F04C2/08; F04C2/12; F04C2/14; F04C2/16
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |