They have all been answered correctly:




406. Pyrite

407. Telegraph key

408. Playing card shuffler

409. Fishing gaff

410. Machinist's 1-2-3 block

411. Cable connector

Links to patent info for the fishing gaff and the cable connector can be
found on the answer page:

http://pzphotosan74l.blogspot.com/


Thanks to all who participated this week.

Rob