Geoff Emms
04-29-2019, 8:04 PM
Hi all,
I'm chasing some info about this relatively modern expansive bit I recently purchased. It's a No 250 made by Robert H. Clark Co. of Beverly Hills and is marked on the back "Pats Pend USA". I'm trying, without success, to find the patent for this bit.
I've found two patents for expansive bits by H C Wilson assigned to Clark (2496427 & 2577986) both from the 1950's but neither of them for this bit. Any help will be appreciated.
Cheers,
Geoff.
I'm chasing some info about this relatively modern expansive bit I recently purchased. It's a No 250 made by Robert H. Clark Co. of Beverly Hills and is marked on the back "Pats Pend USA". I'm trying, without success, to find the patent for this bit.
I've found two patents for expansive bits by H C Wilson assigned to Clark (2496427 & 2577986) both from the 1950's but neither of them for this bit. Any help will be appreciated.
Cheers,
Geoff.