1991年第2版GPL的设计，同样是为了防止持有专利者利用他们的专利权以某种会使软件变得非自由的手段强加许可协议给重发布者。
GPL version 2, in 1991, was designed also to prevent patent holders from using their patents to impose licenses on redistributors in a way that would make the software non-free.
专利 ：在整个市场营销之初，包装和邮寄会伴随着任何业务，手工艺者同时也必须关注一些法律因素，如获得专利和销售许可。
Patents : On top of the general marketing, packaging and mailing that go along with any business, crafters should also focus on legal concerns such as obtaining patents and a seller's license.
在过去，竞争者或许可以利用专利阻止你销售他们生产的东西，但无法阻止你把它拆开来研究。
In the past, a competitor might use patents to prevent you from selling a copy of something they made, but they couldn't prevent you from taking one apart to see how it worked.
应用推荐