Patent US2837898A successfully refreshed from Google Patents.
US2837898A
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Differential plunger type liquefied gas pump
Assignee: Union Carbide Corp
•
Filing: 1953-07-15
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Granted: 1958-06-10
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Expires: 1973-07-15
Abstract
No abstract record available.
Inventors
- 👤 Phillip M Ahlstrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:44
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/166; F04B11/00; F04B11/005; F04B11/0075; F04B11/0083; F04B15/00; F04B15/06; F04B15/08; F04B23/00; F04B23/02; F04B23/021; F04B23/023; F04B53/06; F04B53/10; F04B53/102; F04B53/1035; F04B53/12; F04B53/125; F04B53/126; F04B53/164; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18208
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-09 | 1961-12-09 | 1962-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-09 | 1965-12-09 | 1966-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-09 | 1969-12-09 | 1970-06-10 | $7700.00 | Window Closed / Lapsed |