File:US pat 4257705 fig 6.png
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editUS patent 4257705 fig 6
coincidence rangefinder
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editPublic domainPublic domainfalsefalse |
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current | 07:13, 6 June 2007 | 502 × 664 (17 KB) | Shotgunlee (talk | contribs) | US patent 4257705 fig 6 coincidence rangefinder |
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