Patent US2463865A successfully refreshed from Google Patents.
US2463865A
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Pumping limit control apparatus
Assignee: Old Carco LLC
•
Filing: 1944-06-05
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Granted: 1949-03-08
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Expires: 1964-06-05
Abstract
No abstract record available.
Inventors
- 👤 Henry W Gilfillan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:12
CPC Classifications
F; F04; F04D; F04D27/00; F04D27/02; F04D27/0207; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0246; F02D2700/0258; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2544; Y10T137/2703; Y10T137/7722; Y10T137/7758; Y10T137/7759
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) | 1952-03-07 | 1952-09-06 | 1953-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-07 | 1956-09-06 | 1957-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-07 | 1960-09-06 | 1961-03-08 | $7700.00 | Window Closed / Lapsed |