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Electric drill with built-in chuck key
US 2,807,732 A
Filed
: 01/04/1957
Issued
: 09/24/1957
Est. Priority Date
: 01/04/1957
Status: Expired due to Term
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23
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Current Assignee
Joseph Kurtovich
Original Assignee
Joseph Kurtovich
Inventors
JOSEPH KURTOVICH
Application Number
US03/632,602
Time in Patent Office
263 Days
Field of Search
US Class Current
310/50
CPC Class Codes
B23B 2231/38
Keyless chucks for hand tools
B23B 45/006
Keys for operating the chucks
B25B 33/005
Chuck keys
Y10S 408/71
Safety device
Y10T 279/3451
Nonseparable or built-in
Y10T 408/953
Clamping jaws
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