Assignee
PATTEN FREDERIC D VAN
3 granted patents·23 citations·filing 1983–1986
Top patents by PatentIndex Score
3 records- 0149US4434784AViewing apparatus for a chimneyPATTEN FREDERIC D VAN·Filed 1983·Granted Mar 6, 1984·18 cites·5 claims
- 0225US4612908AViewing instrument for chimneyPATTEN FREDERIC D VAN·Filed 1985·Granted Sep 23, 1986·4 cites·4 claims
- 0321US4681086AViewing instrument for chimneyPATTEN FREDERIC D VAN·Filed 1986·Granted Jul 21, 1987·1 cites·8 claims
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