FR986573A
Expired / Lapsed
FR
⏱️ 0.0 years remaining
Devices and means for perforating or excavating well boreholes, etc.
Assignee: Gulf Research and Development Co
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Filing: 1949-03-14
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Granted: 1951-08-02
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Expires: 1969-03-14
Abstract
No abstract record available.
Inventors
- 👤 M Muskat
- 👤 F W Parker
- 👤 W L Kehl
Bibliographic Details
Application Number
—
Jurisdiction
FR
Data Source
google_patents
Last Synchronized
2026-10-24 19:52
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
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