Improvement in ear-mufflers

Title

Improvement in ear-mufflers

Creator

U. S. Patent Office

Contributor

Chester Greenwood

Description

Patent number188,292 granted to Chester Greenwood for an improved ear protection device.

Publisher

U. S. Patent Office

Rights

Issued March 13, 1877

Language

English

Format

.pdf

Type

Still image

Identifier

ISBN:
UPC:
SKU: 2022Inv2
CALL#:

Files

Chester_Greenwood_earmuffs.jpg

Collection

Inventors

Citation

U. S. Patent Office, “Improvement in ear-mufflers,” The Children's Collection, accessed December 24, 2025, https://catalog.thechildrenscollection.org/items/show/60.