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A product of Philip B. Kail Associates, Inc.
1490. A Capito Original mouse trap, the mouse enters and trips the platform dropping the door behind him. He climbs up the tube and gets on another platform. This second platform closes his way back down the tube and also opens the door for the next mouse, he then drops down into the canister.
It's missing the door at the entrance:
Patent number 1,102,896
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1491. A saw jointer or raker gauge, used with a file to level the teeth of a saw prior to sharpening, patent number 246,414.
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1492. These are plungers that were used with old syringes, as seen here.
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1493. A two piece steel welding hinge, for use on gates, machinery doors, barbecue pits, electrical boxes, and trailers.
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1494. A salesman's sample Model A coal furnace made by the Williamson Heater Company:
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The price on this salesman's sample was $1250.
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Update
1488. The answer was found for this tool, it's a device for sorting card records, patent number 2,261,719:
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Last week's set is seen below, click here to view the entire post.
Black Ops Pro Tips
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