US2593058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic recirculating control for pumps
Assignee: CONTINENTAL FOUNDRY AND MACHIN
•
Filing: 1949-04-19
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Granted: 1952-04-15
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Expires: 1969-04-19
Abstract
No abstract record available.
Inventors
- 👤 Schlieder Harold Augustus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:28
CPC Classifications
F; F22; F22D; F22D11/00; F22D11/02; F04; F04D; F04D15/00; F04D15/0005; F04D15/0011
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2463828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-15 | 1955-10-15 | 1956-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-15 | 1959-10-15 | 1960-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-15 | 1963-10-15 | 1964-04-15 | $7700.00 | Window Closed / Lapsed |