Inventor · disambiguated record
David T. Cass
Also filed as: CASS DAVID T
5 granted patents·225 citations·filing 1981–1996
84Inventor score
Technology areasE21D
Files withROBBINS CO4
Top patents by PatentIndex Score
5 records- 0192US4646853AShaft boring machine and methodROBBINS CO·Filed 1984·Granted Mar 3, 1987·57 cites·36 claims
- 0288US4420188ADouble shield tunnel boring machineROBBINS CO·Filed 1981·Granted Dec 13, 1983·35 cites·19 claims
- 0386US5890771ATunnel boring machine and methodFiled 1996·Granted Apr 6, 1999·87 cites·45 claims
- 0471US5203614ATunneling machine having liquid balance low flow slurry systemROBBINS CO·Filed 1991·Granted Apr 20, 1993·43 cites·21 claims
- 0528US5127711AHopper and hood combination for tunneling machine and tunneling machine having the sameROBBINS CO·Filed 1991·Granted Jul 7, 1992·3 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when David T. Cass files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →