Title: Life ring

Abstract: Life ring having apertured main body of foamed plastic with a secondary ring rigidly attached to it by connecting members.

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Inventors: Hull, Evan B. (Northboro, MA, US)

Application Number: 688737
Filing Date: 1976-05-21
Publication_date: 1977-11-29
Assignee:
Primary Class(es): 441/81
Other Classes:
US Patent Ref:

175828	Apr, 1876	Fife	9/340.
1156749	Oct, 1915	Brown	9/340.
3032789	May, 1962	Fedorowicz	9/340.
3594836	Jul, 1971	Robertson	9/340.

Other Refs: 68,406

Dec, 1913	CH

Primary Examiner: Blix, Trygve M.
Assistant Examiner: Sotelo, Jesus D.
Attorney: Blodgett; Norman S., Blodgett; Gerry A.