Inventor · disambiguated record
Karl L. Polen
Also filed as: POLEN KARL L
5 granted patents·67 citations·filing 1975–1983
81Inventor score
Top patents by PatentIndex Score
5 records- 0164US4214664ACrane safety reevingALLIANCE MACHINE·Filed 1978·Granted Jul 29, 1980·21 cites·10 claims
- 0259US4094493AGantry cranesALLIANCE MACHINE CO·Filed 1977·Granted Jun 13, 1978·13 cites·3 claims
- 0358US4027800AGantry crane with plural hoist meansALLIANCE MACHINE CO·Filed 1975·Granted Jun 7, 1977·12 cites·5 claims
- 0451US4503921AWeighing systemALLIANCE MACHINE CO·Filed 1983·Granted Mar 12, 1985·12 cites·5 claims
- 0540US4446813AMould handling, cleaning and preparation systemsALLIANCE MACHINE CO·Filed 1983·Granted May 8, 1984·9 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →