Assignee

WIJESIRIWARDENA DON BERNARD

1 granted patent·1 pending application·5 citations·filing 1975–2007

Technology mixE02B1 G09B1

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2 records

0143US2011059424A1Visual Mathematical Learning DeviceWIJESIRIWARDENA DON BERNARD·Filed 2007·Application pending·0 cites
0216US4023369APrevention of sand bar formation at outlets into the sea or other bodies of waterWIJESIRIWARDENA DON BERNARD·Filed 1975·Granted May 17, 1977·5 cites·6 claims

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