Sigma Labs Inc (SASI)

[3dtdman]

Registration number is 3479078. Status is live.

"Word Mark IPQA
Goods and Services IC 042. US 100 101. G & S: Quality control and assessment services for others, namely, for monitoring quality control of manufacturing technology based on an approach which collects and analyzes in-process, real-time data using computer hardware and software. FIRST USE: 20000501. FIRST USE IN COMMERCE: 20000501"

http://tmsearch.uspto.gov/bin/showfield?f=doc&state=4802:kr4iie.2.3

More properly designated as the "circle R" (on a laptop w/o a numerical keypad, can't do the ALT 0174 trick) than TM since it has been registered with the US government:

"Yet, the ® symbol may only be used after the US Government grants a Federal registration certificate. The ® symbol may not be used while the Federal application is pending. Additionally, the ® symbol may only be used in connection with the goods and services listed on the registration certificate."

http://howconceptual.com/tm-symbol/