19560731_Bowling_pin-setting_mechanism_-_U._S._Patent_2,757,000.png
Summary
Description 19560731 Bowling pin-setting mechanism - U. S. Patent 2,757,000.png |
English:
Assembled clippings from U. S. Patent 2,757,000, "Bowling pin-setting mechanism", including Figure 2, altered by uploader to highlight candlepins in blue.
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Date | |
Source | https://patents.google.com/patent/US2757000A/en?oq=US2%2c757%2c000 (Google patents) |
Author | United States Government, U.S. Patent and Trademark Office publishing in 1956 the patent drawing of inventors Howard M. Dowd and Royal L. Barrows. |
Licensing
Public domain Public domain false false |
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