About Robert Hillberg
Lived 1917 – 2012 (aged 94). Robert Hillberg was an American designer and expert witness.
Partial list of patents
Hillberg holds numerous patents for firearms, including:
1958 for a firing pin with plastic sleeve (High Standard Manufacturing Company)
1958 for a manual charger
1959 for a gas operated firearm with gas piston surrounding a tubular magazine (High Standard Mfg. Corp.)
1962 for a sear mechanism disconnected by breech block motion
1966 for a multi-barrel firearm with rotatable and reciprocable hammer (Olin Mathieson Corporation)
1970 for shotgun barrel construction (Bellmore-Johnson Tool Company)
1971 for a firearm with falling breechblock (Colt's Inc.)
1972 for shotgun barrel construction
1974 for a folding gun stock
1980 for a firearm grip assembly
1980 for a firearm hammer block safety mechanism
1981 for a firearm magazine safety mechanism
1982 US Des. 262567 for a rifle design
1983 for a multi-barrel handgun firing mechanism
1983 for a handgun strut assembly
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Important facts
Related people
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Contemporaries
People whose lives overlapped Robert Hillberg's
Frequently asked questions
Who was Robert Hillberg?
American firearm designer (1917-2012)
When was Robert Hillberg born?
Robert Hillberg was born on 27 August 1917 in Iowa.
When did Robert Hillberg die?
Robert Hillberg died on 12 August 2012 in Connecticut.
What was Robert Hillberg's occupation?
Robert Hillberg was a designer and expert witness.
What nationality was Robert Hillberg?
Robert Hillberg was American.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Robert Hillberg. https://biography.guide/robert-hillberg/
MLA: "Robert Hillberg." Biography.guide, https://biography.guide/robert-hillberg/.
Chicago: "Robert Hillberg." Biography.guide. https://biography.guide/robert-hillberg/.
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