Inventor · disambiguated record
Andy D. Helfrich
Also filed as: HELFRICH ANDY D
2 granted patents·1 pending application·68 citations·filing 1999–2003
66Inventor score
Files withTELLABS OPERATIONS INC2
Top patents by PatentIndex Score
3 records- 0176US6301254B1Virtual path ring protection method and apparatusTELLABS OPERATIONS INC·Filed 1999·Granted Oct 9, 2001·57 cites·27 claims
- 0272US6553034B2Virtual path ring protection method and apparatusTELLABS OPERATIONS INC·Filed 2001·Granted Apr 22, 2003·11 cites·3 claims
- 0336US2003142678A1Virtual path ring protection method and apparatusFiled 2003·Application pending·0 cites
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →