Individual holder
BERSHAK WILLIAM P
US·1 granted patent·1 pending application·17 citations·filing 1985–2010
Individually held — no corporate assignee on record.
Technology mixA63H2
Top patents by PatentIndex Score
2 records- 0138US4669996ARecreational flying ring having primary and secondary airfoilsBERSHAK WILLIAM P·Filed 1985·Granted Jun 2, 1987·17 cites·6 claims
- 0231US2010304635A1Material improvements including the addition of a third airfoil to recreational flying ring having primary and secondary airfoilsBERSHAK WILLIAM P·Filed 2010·Application pending·0 cites
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