Inventor · disambiguated record
Michael C. Walgren
Also filed as: WALGREN MICHAEL C
12 granted patents·1 pending application·119 citations·filing 2010–2024
90Inventor score
Technology areasE02F
Files withCHARLES MACHINE WORKS13
Top patents by PatentIndex Score
13 records- 0188USD640290SMicro-trenching bladeCHARLES MACHINE WORKS·Filed 2010·Granted Jun 21, 2011·45 cites·1 claims
- 0284USD796291SMicrotrenching blade and toothCHARLES MACHINE WORKS·Filed 2016·Granted Sep 5, 2017·24 cites·1 claims
- 0381USD796292SMicrotrenching blade and toothCHARLES MACHINE WORKS·Filed 2016·Granted Sep 5, 2017·21 cites·1 claims
- 0460US2023265641A1Microtrenching blades with replaceable cuttersCHARLES MACHINE WORKS·Filed 2023·Application pending·0 cites
- 0556USD640291SConical cutting elementCHARLES MACHINE WORKS·Filed 2010·Granted Jun 21, 2011·10 cites·1 claims
- 0650USD925627SMicrotrencher bladeCHARLES MACHINE WORKS·Filed 2019·Granted Jul 20, 2021·4 cites·1 claims
- 0748USD795932SToothCHARLES MACHINE WORKS·Filed 2016·Granted Aug 29, 2017·4 cites·1 claims
- 0845USD925628SMicrotrencher bladeCHARLES MACHINE WORKS·Filed 2019·Granted Jul 20, 2021·3 cites·1 claims
- 0945USD925626SMicrotrencher bladeCHARLES MACHINE WORKS·Filed 2019·Granted Jul 20, 2021·3 cites·1 claims
- 1044USD640292SMicro-trenching bladeCHARLES MACHINE WORKS·Filed 2010·Granted Jun 21, 2011·5 cites·1 claims
- 1143USD1089341SMicrotrencher bladeCHARLES MACHINE WORKS·Filed 2024·Granted Aug 19, 2025·0 cites·1 claims
- 1236USD1040197SMicrotrencher bladeCHARLES MACHINE WORKS·Filed 2021·Granted Aug 27, 2024·0 cites·1 claims
- 1330USD1032318STooth for use with a microtrenching bladeCHARLES MACHINE WORKS·Filed 2022·Granted Jun 25, 2024·0 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →