US2883874A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy duty pump
Assignee: Halliburton Oil Well Cementing Co
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Filing: 1958-02-03
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Granted: 1959-04-28
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Expires: 1978-02-03
Abstract
No abstract record available.
Inventors
- 👤 Frank A Bynum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:02
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/02; F16H57/021; F16H57/022; F04; F04B; F04B9/00; F04B9/02; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; F16H57/039; Y; Y10; Y10S; Y10S417/00; Y10S417/90; Y10T; Y10T74/00; Y10T74/19; Y10T74/19628; Y10T74/19633; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/19842
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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |