Inventor

PELLA JOHN P

US3 patents

⚠️ This page may combine multiple inventors who share the name “PELLA JOHN P”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MICROSOFT CORP

2 patents

US6234802B1May 22, 2001

Virtual challenge system and method for teaching a language

MICROSOFT CORP120 citations90

US7187377B1Mar 6, 2007

Three-dimensional virtual tour method and system

MICROSOFT CORP24 citations84

FIRTH DAVID G

1 patent

US9107613B2Aug 18, 2015

Handheld scanning device

FIRTH DAVID G5 citations66