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Patent
   D260599
Priority
Mar 19 1979
Filed
Mar 19 1979
Issued
Sep 08 1981
Expiry
Sep 08 1995
Inventors
Wong, Siu …
Assg.orig
Ching Wah …
Assg.curr
Ching Wah …
Entity
unknown
Referenced by
13
References
4
Maint.:
n/a
The ornamental design for a ratchet screwdriver, substantially as shown.

FIG. 1 is a perspective view of the ratchet screwdriver of this invention from above and one side;

FIG. 2 is a perspective view thereof from below and the other side and

FIG. 3 is a side elevation thereof.
INVENTORS:

Wong, Siu W.

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
7389700, Apr 21 2006 Bradshaw Medical, Inc. Variable torque-limiting driver
D296296, Aug 29 1985 Hip Shing Fat Company, Ltd. Ratchet screwdriver handle
D334577, Jun 06 1991 D-WEED-R CORPORATION, AN ARIZONA CORPORATION Power drill mounted weeding tool
D339279, Jan 08 1992 WILLI HAHN GMBH & CO KG Handle for a screwdriver
D351547, Sep 28 1992 Screwdriver and removable bit assembly
D356239, Jul 08 1993 Ratcheting screw driver
D377444, Oct 30 1995 Handle for a tool
D494829, May 19 2003 Handle for screwdriver
D557584, Jun 20 2006 BRADSHAW MEDICAL, INC Handle for a driver for a tool
D562665, Apr 21 2006 BRADSHAW MEDICAL, INC Ratcheting screwdriver assembly
D580730, Apr 21 2006 BRADSHAW MEDICAL, INC Fixed-torque limiting handle for a driver
D696922, Aug 08 2012 Skateboard spike handle
D700033, Jan 30 2013 Yih Cheng Factory Co., Ltd. Handle of tool
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
1776928,
3080900,
902957,
204125,
ASSIGNMENT RECORDS    Assignment records on the USPTO
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Mar 19 1979Ching Wah Metal Ware Factory Limited(assignment on the face of the patent)
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
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