Patent US2845874A successfully refreshed from Google Patents.
US2845874A
Expired / Lapsed
US
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Metering pump
Assignee: Individual
•
Filing: 1956-11-02
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Granted: 1958-08-05
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Expires: 1976-11-02
Abstract
No abstract record available.
Inventors
- 👤 James H Nangle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:20
CPC Classifications
G; G01; G01F; G01F3/00; G01F3/02; G01F3/20; F; F04; F04B; F04B43/00; F04B43/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1119029A
Cited
US1568091A
Cited
US1976415A
Cited
US2046491A
Cited
GB535704A
Cited
US2648288A
Cited
US2689530A
Cited
US2785638A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |