Class 411/941.3 - Ball

Subclass of Class 411 - Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener
Definition: Art collection under art collection 941 in which the device
No. of patents: 1
Last issue date: 07/21/1987

Number	Title	Issue Date
4681495	Device and process for fixing two parts with a captive screw A device and process for fixing two parts with a captive screw (5) engaged in a threaded hole (3) machined in at least one of the two parts (1,2). The screw (5) comprises over its whole length a bore (6) communicating with at least one radially directed h...	07/21/1987

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