Assertion: pistol's magazine | /r/HasProperty | focal point of the patent
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Source sentences:
text: This predates the filing of Browning's patent for the large-capacity 9 mm pistol [6-28-1923, issued as U.S. patent #1,618,510, dated 22 Feb. 1927] by some 18 years as the Savage was patented in 1905, Whether the staggered magazine featured in the Savage 1905 was a focal point of the patent is unclear.