Number | Name | Date | Kind |
---|---|---|---|
5217191 | Smith | Jun 1993 | |
5564669 | Wu | Oct 1996 | |
5816554 | McCracken | Oct 1998 |
Entry |
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Portable Pipe Hangers, Inc. Catalogue; pp. 9, 29, Sec. 07730/Sec. 15060 (1997/1998). |
Brochure re: Portable Pipe Hangers, Inc. "Specifications for Standard Models" 1997/1998. |