Joints and connections – Having a joining piece extending through aligned openings in...
Reexamination Certificate
2005-09-20
2005-09-20
Cottingham, John R. (Department: 2116)
Joints and connections
Having a joining piece extending through aligned openings in...
C411S386000, C411S412000, C411S413000, C411S387100
Reexamination Certificate
active
06945729
ABSTRACT:
A second material is fastened to a first material by a tapping screw having a male thread. The first material includes a hole and a concave portion around the hole. The hole has a surface in which a female thread is formed as the tapping screw is screwed in.
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Cottingham John R.
Ricoh Company Limited
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