Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores
Reexamination Certificate
2006-02-17
2010-06-08
Davis, Robert B (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
With mechanical means forming or expanding pores
C425S110000, C425S127000, C425S812000, C425S81700C
Reexamination Certificate
active
07731487
ABSTRACT:
A mold for forming a foam earplug including a lower mold portion including a lower cavity; and an upper mold portion including an upper cavity and a means for venting a gas during a rising of the foam, wherein the lower and upper mold portions are engageable so as to communicably engage the lower and upper cavities.
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Falco Robert N.
Hall James
Hall, legal representative Lori S.
Knauer Richard
Seville Alan R.
3M Innovative Properties Company
Davis Robert B
Hanson Karl G.
Leyson Joseph
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