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US Patent: 4,458,766
Hydrojet drilling means
Patentee:
Gilbert Siegel (exact or similar names) - Garden Grove, CA

USPTO Classifications:
175/25, 175/67

Tool Categories:
specialty machines : water jet cutting apparatus

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Sep. 20, 1982
Granted: Jul. 10, 1984

Patent Pictures:
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