Otis Boykin U.S. patent 2,972,726 issued (1961-02-21)

CTL-E-4564 · Event · other · 1961

PROVISIONAL evidence grade of this record

Boykin's improved electrical resistor patented in 1961; U.S. Patent 2,972,726 issued to him on February 21, 1961 (date per the canonical stub's primary patent record).

Notes

RELP105 supporting event entity; events.json CTL-EVT-023302. Patent number/date retained Provisional (stub primary record; web corroborates the 1961 improved-resistor patent).

Relationships

Patricia Bath Laserphaco patent issued (1988-05-17) — related to
Boykin's 1961 improved-resistor patent and Patricia Bath's 1988 Laserphaco patent are both milestone U.S. patents by Black inventors.

Referenced by

Otis Boykin — initiated → this record

Sources

National Inventors Hall of Fame, Otis Boykin inductee profile. https://www.invent.org/inductees/otis-boykin

Record CTL-E-4564 · CultureTechLens Knowledge Graph · evidence grade: PROVISIONAL · 1 source · 2 mapped relationships · CTL research: RELP-001.
Directory: all entity records · the knowledge graph

Cite this record

Cite as: CultureTechLens, “Otis Boykin U.S. patent 2,972,726 issued (1961-02-21) (CTL-E-4564),” CultureTechLens Knowledge Graph, October 2026. https://culturetechlens.com/graph/entities/ctl-e-4564/

Chicago: CultureTechLens. “Otis Boykin U.S. patent 2,972,726 issued (1961-02-21) (CTL-E-4564).” CultureTechLens Knowledge Graph. Chicago, IL: CultureTechLens, 2026. https://culturetechlens.com/graph/entities/ctl-e-4564/
APA: CultureTechLens. (2026). Otis Boykin U.S. patent 2,972,726 issued (1961-02-21) (CTL-E-4564) [Entity record]. CultureTechLens Knowledge Graph. https://culturetechlens.com/graph/entities/ctl-e-4564/
MLA: CultureTechLens. “Otis Boykin U.S. patent 2,972,726 issued (1961-02-21) (CTL-E-4564).” CultureTechLens Knowledge Graph, 2026, https://culturetechlens.com/graph/entities/ctl-e-4564/

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From the Archive

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Apartment houses and funeral parlor in Negro section of Chicago, Illinois, Chicago, 1941Photo: Lee, Russell, 1903-1986, FSA-OWI, Public Domain, via Library of Congress

Crowd outside of fashionable Negro church after Easter Sunday service, Black Belt, Chicago, Illinois, Chicago, 1941Photo: Rosskam, Edwin, 1903-1985, FSA-OWI, Public Domain, via Library of Congress

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