Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUSD311483 S
Publication typeGrant
Application numberUS 06/930,868
Publication dateOct 23, 1990
Filing dateNov 14, 1986
Publication number06930868, 930868, US D311483 S, US D311483S, US-S-D311483, USD311483 S, USD311483S
InventorsMario W. Espin
Original AssigneeHelen P. Espin
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Screw driver bit
US D311483 S
Abstract  available in
Previous page
Next page
  1. The ornamental design for a screw driver bit, as shown and described.

FIG. 1 is a perspective view of a screw driver bit, showing my new design;

FIG. 2 is a front end elevational view thereof;

FIG. 3 is a rear end elevational view thereof; and

FIG. 4 is a side elevational view thereof, all other sides being identical.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US8955418Mar 8, 2013Feb 17, 2015Black & Decker Inc.Threaded fastener driving tool
U.S. ClassificationD08/86, D15/139, D08/70