A squeegee with ergonomic handle and non-loosening pivotable blade. The squeegee includes a handle for one of attaching to a pole and holding in a hand of a user, a blade portion pivotally mounted to the handle for side to side pivotal movement relative thereto, and pivoting apparatus for pivotally mounting...http://www.google.com.tw/patents/US5946762?utm_source=gb-gplus-share專利 US5946762 - Squeegee with ergonomic handle and non-loosening pivotable blade
