Thanks for posting Hans,
Looking at typical magazine design of only feeding one individual round at the upper end of a magazine into almost any firearm isn't exactly new? If then, all magazines may be guilty of infringing on original design then? Are all variations magazines patented including first one produced? Then, if looking at Sig-Sauers individual patent, does it specify how many rounds in their magazine? - Many to most patents are over ridden and discarded because of slight variations of original patent by fastener placement, capacity or other variations of original patent.
There are also "scallywags" who prey on others patents at or near the patent office with the intentions of doing only that and profiting off others hard work. Proving it is sometimes another whole story?
Unfortunately, preying on others patents isn't really morally right or original. It is however an eyeopener on how many products aren't patented because of basically theft of their original ideas from patent office. Those unpatented products are generally rushed into the market place in mass surges for originator to collect their compensation before others glean their ideas. Or, they sit on their ideas until the time is ripe for their release into the general market place. Likely twice as many patents aren't applied for or filed because of it? In some ways, filing for patents have become a scam in a sense and in effect beating the very system for the very reasons they were implemented and intended to protect whatever product? Sadly, the patent office may be sort of like a shopping mall for innovation?
An off the wall slightly related bit of info: Heard Albert Einstein once worked at the patent office.
