Inventor · disambiguated record

Leonard Hirschberger

Also filed as: HIRSCHBERGER LEONARD

2 granted patents·39 citations·filing 1976–1977

62Inventor score

Technology areasC04B C11D

Files withSCHWARZMANN FREDERICK G2

Top patents by PatentIndex Score

2 records

0172US4028261ATile and grout cleaner and restorerSCHWARZMANN FREDERICK G·Filed 1976·Granted Jun 7, 1977·33 cites·6 claims
0233US4130442AMethod for renewing groutSCHWARZMANN FREDERICK G·Filed 1977·Granted Dec 19, 1978·6 cites·5 claims

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Leonard Hirschberger — Patent Inventor | PatentIndex