I need help with a patent search

[jljr1944]

I'm trying to get a patent drawing for the Cattaraugus 1W or 3w type wrench knife and I'm not having much luck.
I don't have a patent number so it makes the patent search much more difficult. By any chance is there someone out there who knows the patent number for the crescent style 1w or 3w wrench knife that Cattaraugus made?
I've been trying to get it using the Google patent search but I haven't had any luck.
Any help/advice would be apreciated.

[rangerbluedog]

I think those later models were also covered under the Tint Champlin patent, which was for a "combined knife and wrench".
I don't think a new patent was warranted just because the style of wrench was changed. I may be wrong though.
Here's a link to a list of knife and wrench patents.
http://sites.google.com/a/multi-tool.or ... nts-wrench

[jljr1944]

Thanks for that link.I think you are probably right in your assumption. Much appreciated.