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- Thu May 07, 2015 6:03 am
- Forum: Hubertus
- Topic: HUBERTUS SCHRADE PATENT ? penblade release patent nfo wanted
- Replies: 1
- Views: 6320
HUBERTUS SCHRADE PATENT ? penblade release patent nfo wanted
I've searched hundreds of patents , has anyone ever viewed the patent for the pen blade release switchblade knife produced by Hubertus ? I wonder was it patented ? When ? Was it produced by anyone else before Hubertus ? Could this be the patent sold by Schrade before he left Germany ? Some literatur...