This patent is also for tree branches. With chains. Regular metal frames in play... | Hacker News

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jswift on Sept 28, 2012 | parent | context | favorite | on: Patent US6368227 - Method of swinging on a swing

This patent is also for tree branches. With chains.

Regular metal frames in playgrounds are exempted and so too are tree branches with ropes.

fpgeek on Sept 28, 2012 [–]

Wondeful! Lots of room for follow-on patents! (said the patent lawyer)

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