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US3000323A
Expired / Lapsed
US
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High pressure gear pump
Assignee: Heil Co
•
Filing: 1960-04-14
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Granted: 1961-09-19
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Expires: 1980-04-14
Abstract
No abstract record available.
Inventors
- 👤 Glenn S Park
- 👤 George A Rea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:15
CPC Classifications
F; F04; F04C; F04C15/00; F04C15/0003; F04C15/0023; F04C15/0026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2044873A
Cited
US2816510A
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US2728301A
Cited
US2809592A
Cited
US2923248A
Cited
US2842066A
Cited
FR1121180A
Cited
US2932254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |