Locking Clip, patent number 5388313 Who manafactures it and where can it be bought.

Note to researchers:

http://www.bandwidthmarket.com/resources/patents/apps/2002/1/20020000027.html

0008] The locking clip disclosed in U.S. Pat. No. 5,388,313 (Cameron)
addresses a number of these issues, and is highly effective for many
applications. However, the toothed ramp mechanism of this device
limits the clamping force to a predetermined range (i.e., between
finite upper and lower limits), whereas in some instances it may be
desirable to be able to exert a greater or lesser degree of clamping
force against the material; for example, when used with certain very
thin, slippery or wet materials, it may be desirable to exert a much
higher degree of clamping force in order to establish a firmer grip on
the material. Furthermore, the teeth on the device shown in the '313
patent are shown mainly as having the configuration of a series of
transversely extending ridges or corrugations; again, while this
configuration is very effective for use with many types of materials,
other materials may have a tendency to either slip through or tear
between the ridged teeth, particularly if forces are applied in a
somewhat crosswise direction with respect to the jaws of the clip.

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http://www.patent.gov.uk/patent/legal/decisions/2001/o15501.pdf

http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=5388313.WKU.&OS=PN/5388313&RS=PN/5388313

You can buy these at Home Depot in the paint section. They are made by
Homax and are called Crocodile Clips.
http://www.homaxproducts.com/catalog/crocclip.html