I am interested in the historical development of technology. I've always had an interest in locks, keys, vaults, etc., & have been assembling a collection of pdf files of patents relating to bank vaults, safes, safety deposit boxes & similar. In this process I have several times encountered threads in this forum relating to specific areas that I've been studying. Most recently this was patent data relating to the early consolidation of smaller manufacturers into the few who exist today. I have a background in patent researching from my days working as a marketing consultant in the fine organic chemicals field. Hiopefully I can learn from the acquired knowledge to be found here & hope to be able to make my own contributions.

Jack
Flemington, NJ