through hollow arms

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Industry

CPC
G11B3/005

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Parent Industries

GPHYSICS G11Information storage G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER G11B3/00Recording by mechanical cutting, deforming or pressing

Current Industry

G11B3/005through hollow arms

Industries

Patents Grantslast 30 patents

Information Patent Grant
1481406
- Patent number 1,481,406
- Issue date Jan 22, 1924
- G11 - INFORMATION STORAGE
Information Patent Grant
1436004
- Patent number 1,436,004
- Issue date Nov 21, 1922
- G11 - INFORMATION STORAGE
Information Patent Grant
1329906
- Patent number 1,329,906
- Issue date Feb 3, 1920
- G11 - INFORMATION STORAGE