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Polhemus (edit)

Revision as of 15:14, 25 July 2024

2 bytes added ,  15:14, 25 July 2024
→‎Patents
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==Patents==
 
==Patents==
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* [[U.S. 3,868,565]]
+
* [[Patent 3,868,565]]
 
* [[US3983474A]] - 1975 - [[Jack Kuipers]]
 
* [[US3983474A]] - 1975 - [[Jack Kuipers]]
 
* [[US4017858A]]
 
* [[US4017858A]]
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