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Tool for drilling rocks and the like and drilling device comprising such tools
US 2,599,770 A
Filed
: 05/12/1948
Issued
: 06/10/1952
Est. Priority Date
: 05/12/1947
Status: Expired due to Term
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Current Assignee
Paul Marcerou
Original Assignee
Paul Marcerou
Inventors
PAUL MARCEROU
Application Number
US03/026,665
Time in Patent Office
1,490 Days
Field of Search
US Class Current
408/59
CPC Class Codes
B23D 59/025
the lubricating or cooling ...
B28D 1/041
with cylinder saws, e.g. tr...
E21B 10/02
Core bits characterised by ...
Y10T 408/455
Conducting channel extendin...
Y10T 408/81
Tool having crystalline cut...
Y10T 408/8957
and having stepped cutting ...
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