US PATENT SUBCLASS 402 / 53
.~.~.~ Screw threaded


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



402 /   HD   BINDER DEVICE RELEASABLY ENGAGING APERTURE OR NOTCH OF SHEET

46  DF  OPPOSED SHEET RETAINERS INVOLVING RELATIVE RECTILINEAR TRAVEL {4}
48  DF  .~ Telescopic retainers with means to telescopically drive and/or secure {4}
52  DF  .~.~ Notched or grooved means {1}
53.~.~.~ Screw threaded


DEFINITION

Classification: 402/53

(under subclass 52) Device wherein the recess is in the form of a continuous helical groove.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51, for a similar device wherein the screw threaded driving or securing means is disposed remote from the retainers.