INSTRUMENTED SOFTBALL OR BASEBALL BAT AND BAT KNOB AND SYSTEM FOR MONITORING A BAT SWING
THOMPSON ALLEN M, POLSTEIN MATTHEW, POLSTEIN JASON, SRIDHAR SRIRAM, DELGADO MATTHEW
Year of Publication 09.06.2016
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Year of Publication 09.06.2016
Patent
FACE GUARD FRAME, SYSTEM AND METHOD
POLSTEIN MATTHEW EVAN, POLSTEIN MICHAEL ALLAN, POLSTEIN JASON MICHAEL
Year of Publication 23.08.2012
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Year of Publication 23.08.2012
Patent
Method and device for providing an opening on a head strap on a Baseball or Softball sports protective face mask to permit a person to tie back their hair or wear a ponytail style while properly securing the head strap
POLSTEIN MATTHEW EVAN, POLSTEIN MICHAEL ALLAN, POLSTEIN JASON MICHAEL
Year of Publication 28.06.2012
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Year of Publication 28.06.2012
Patent
Online order, fulfillment, and payment distribution system where a product or service is sold to a customer or end user, and a portion of that sale's revenue or profit is distributed to an independent third party not involved in the sale or fulfillment of the order
POLSTEIN MATTHEW EVAN, POLSTEIN MICHAEL ALLAN, POLSTEIN JASON MICHAEL
Year of Publication 21.06.2012
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Year of Publication 21.06.2012
Patent
Protective fielders face guard for softball and baseball
Polstein, Michael, Polstein, Matthew, Polstein, Jason, Polstein, Carole, Polstein, Lauren
Year of Publication 27.10.2009
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Year of Publication 27.10.2009
Patent
Protective fielders face guard for softball and baseball
POLSTEIN LAUREN, POLSTEIN CAROLE, POLSTEIN MATTHEW, POLSTEIN JASON, POLSTEIN MICHAEL
Year of Publication 27.10.2009
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Year of Publication 27.10.2009
Patent
Protective helmet mask
Polstein, Michael Allan, Polstein, Jason Michael, Polstein, Matthew Even, Polstein, Lauren Rachel, Polstein, Carole McShane
Year of Publication 20.10.2009
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Year of Publication 20.10.2009
Patent
Protective helmet mask
POLSTEIN MATTHEW EVEN, POLSTEIN MICHAEL ALLAN, POLSTEIN JASON MICHAEL, POLSTEIN LAUREN RACHEL, POLSTEIN CAROLE MCSHANE
Year of Publication 20.10.2009
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Year of Publication 20.10.2009
Patent