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Electret Microphone

CTL-W-1355 · Work

VERIFIED evidence grade — master store (canonical CSV)

Combined Graph record U-03261 · provenance: canonical master store (CSV), record CTL-W-1355. Master record source: User-supplied article 2026-10-16 (UrbanGeekz) — UNVERIFIED, verify before public citation.

Foil-electret microphone developed with Gerhard Sessler at Bell Labs

Answer summary · this record in brief, from its own record text

Foil-electret microphone developed with Gerhard Sessler at Bell Labs

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Evidence note (master store)

NIHF James West profile: foil-electret microphone developed with Gerhard Sessler at Bell Labs, 'patented their invention in 1962', became the global standard microphone. Stored year 1962 and note confirmed. See conflict: NIHF's own museum-exhibit page says 'Patented in 1964'.

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Record CTL-W-1355 · Combined Graph record U-03261 · CultureTechLens Knowledge Graph · 1 source · 1 mapped relationship.
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Researched and maintained by the CultureTechLens research program · CultureTechLens Combined Graph, Release 2026-11-04. Corrections are public: the corrections log.

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Cite as: CultureTechLens, “Electret Microphone (CTL-W-1355),” CultureTechLens Combined Graph, Release 2026-11-04. https://culturetechlens.com/graph/entities/ctl-w-1355/

Chicago: CultureTechLens. “Electret Microphone (CTL-W-1355).” CultureTechLens Combined Graph. Chicago, IL: CultureTechLens, 2026. https://culturetechlens.com/graph/entities/ctl-w-1355/
APA: CultureTechLens. (2026). Electret Microphone (CTL-W-1355) [Entity record]. CultureTechLens Combined Graph. https://culturetechlens.com/graph/entities/ctl-w-1355/
MLA: CultureTechLens. “Electret Microphone (CTL-W-1355).” CultureTechLens Combined Graph, 2026, https://culturetechlens.com/graph/entities/ctl-w-1355/

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Apartment houses and funeral parlor in Negro section of Chicago, Illinois, Chicago, 1941 — CultureTechLens
Apartment houses and funeral parlor in Negro section of Chicago, Illinois, Chicago, 1941 — CultureTechLensPhoto: Lee, Russell, 1903-1986, FSA-OWI, Public Domain, via Library of Congress
Children at the table in a kitchenette apartment, Chicago, 1941 — CultureTechLens
Children at the table in a kitchenette apartment, Chicago, 1941 — CultureTechLensPhoto: Russell Lee, FSA-OWI, Public Domain, via Library of Congress
Children asleep in a kitchenette apartment, Chicago, 1941 — CultureTechLens
Children asleep in a kitchenette apartment, Chicago, 1941 — CultureTechLensPhoto: Russell Lee, FSA-OWI, Public Domain, via Library of Congress

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