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Assignee: Safety Operating Systems, Inc.

Location: LakeOswego, OR
No. of patents: 1

Number	Title	Issue Date
4958145	Back incline indicator A back incline indicator (10) employs a mercury switch (44) and a beeper (72) to indicate to a user (24) whenever the back of the user (24) is bent beyond an acceptable limit, λcrit. The mercury switch (44) and beeper (72) are attached to a casing (38) i...	09/18/1990