US2696785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metering pump for liquid anhydrous ammonia or other liquids
Assignee: John Blue Co Inc
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Filing: 1949-03-11
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Granted: 1954-12-14
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Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Blue John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:48
CPC Classifications
A; A01; A01C; A01C23/00; A01C23/02; A01C23/023; A01C23/024; F; F04; F04B; F04B15/00; F04B15/06; F04B17/00; F04B17/06; F04B49/00; F04B49/12; F04B49/121; F04B53/00; F04B53/08; F04B53/10; F04B53/12; F04B53/125; F04B53/127; F04B53/16; F04B53/162; F04B53/164; Y; Y10; Y10S; Y10S417/00; Y10S417/901
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) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |