US PATENT SUBCLASS 29 / 402.15
.~.~.~.~ Screw threaded fastener

Current as of: June, 1999
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29 /   HD   METAL WORKING

592  DF  METHOD OF MECHANICAL MANUFACTURE {54}
402.01  DF  .~ Repairing {5}
402.09  DF  .~.~ By attaching repair preform, e.g., remaking, restoring, or patching {4}
402.14  DF  .~.~.~ Mechanically attaching preform by separate fastener {1}
402.15.~.~.~.~ Screw threaded fastener

DEFINITION

Classification: 29/402.15

Screw threaded fastener:

(under subclass 402.14) Process of repairing comprising fastening the repair preform to the existing device by an externally or internally helically ribbed means.