Inventor · disambiguated record
Thord I. Engstrom
Also filed as: ENGSTROEM THORD I
5 granted patents·299 citations·filing 1980–1983
84Inventor score
Files withARNTYR OSCAR SVEN5
Top patents by PatentIndex Score
5 records- 0195US4419232AFiltering and collecting device for water drainsARNTYR OSCAR SVEN·Filed 1981·Granted Dec 6, 1983·228 cites·6 claims
- 0259US4325572AArrangement in rain-water drains or manholesARNTYR OSCAR SVEN·Filed 1980·Granted Apr 20, 1982·25 cites·4 claims
- 0358US4553876AMethod and apparatus for laying drains in frost-susceptible ground, and drains laid in such groundARNTYR OSCAR SVEN·Filed 1983·Granted Nov 19, 1985·20 cites·6 claims
- 0448US4486122AMethod and device for reducing the risk of freezing of surface-water pipe-line systemsARNTYR OSCAR SVEN·Filed 1982·Granted Dec 4, 1984·14 cites·6 claims
- 0543US4475844AMethod and apparatus for restricting local variations in ground level in the vicinity of surface water drains and manholesARNTYR OSCAR SVEN·Filed 1982·Granted Oct 9, 1984·12 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →