Hierarchy/Derived subclasses
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uspto searches
Patent Apps in 213/77Granted Patents in 213/77
Use the links above or do an advanced search in ppubs for:
(213/77.ccls. or 213/78.ccls. or 213/79.ccls. or 213/80.ccls. or 213/81.ccls. or 213/82.ccls. or 213/83.ccls. or 213/84.ccls. or 213/85.ccls. or 213/86.ccls. or 213/87.ccls. or 213/88.ccls. or 213/89.ccls. or 213/90.ccls. or 213/91.ccls. or 213/92.ccls. or 213/93.ccls. or 213/94.ccls. or 213/95.ccls. or 213/96.ccls. or 213/97.ccls. or 213/98.ccls. or 213/99.ccls. or 213/100r.ccls. or 213/101.ccls. or 213/102.ccls. or 213/103.ccls. or 213/104.ccls. or 213/105.ccls. or 213/106.ccls. or 213/107.ccls. or 213/108.ccls. or 213/109.ccls. or 213/110.ccls. or 213/111.ccls. or 213/112.ccls. or 213/113.ccls. or 213/114.ccls. or 213/115.ccls. or 213/116.ccls. or 213/117.ccls. or 213/118.ccls. or 213/119.ccls. or 213/120.ccls. or 213/121.ccls. or 213/122.ccls. or 213/123.ccls. or 213/124.ccls. or 213/125.ccls. or 213/126.ccls. or 213/127.ccls. or 213/128.ccls. or 213/129.ccls. or 213/130.ccls. or 213/131.ccls. or 213/132.ccls. or 213/133.ccls. or 213/134.ccls. or 213/135.ccls. or 213/136.ccls. or 213/137.ccls. or 213/138.ccls. or 213/139.ccls. or 213/140.ccls. or 213/141.ccls. or 213/142.ccls. or 213/143.ccls. or 213/144.ccls. or 213/145.ccls. or 213/146.ccls. or 213/147.ccls. or 213/148.ccls. or 213/149.ccls. or 213/150.ccls. or 213/151.ccls. or 213/152.ccls. or 213/153.ccls. or 213/154.ccls. or 213/155.ccls. or 213/156.ccls. or 213/157.ccls. or 213/158.ccls. or 213/159.ccls. or 213/160.ccls. or 213/161.ccls. or 213/162.ccls. or 213/163.ccls. or 213/164.ccls. or 213/165.ccls. or 213/166.ccls. or 213/167.ccls. or 213/168.ccls. or 213/169.ccls. or 213/170.ccls. or 213/171.ccls. or 213/172.ccls. or 213/173.ccls. or 213/174.ccls. or 213/100w.ccls.)
At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.