Robert Earl Barrows

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Blue Ridge, VA, US

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Patents Grantslast 30 patents

Information Patent Grant
Down hole drill chuck lock
- Patent number 4,836,306
- Issue date Jun 6, 1989
- Ingersoll-Rand Company
- Robert E. Barrows
- E21 - EARTH DRILLING MINING
Information Patent Grant
Lubricator
- Patent number 4,598,796
- Issue date Jul 8, 1986
- Ingersoll-Rand Company
- Robert E. Barrows
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Air line lubricator
- Patent number 4,450,938
- Issue date May 29, 1984
- Ingersoll-Rand Company
- Henry A. Davenport
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Overrunning clutch
- Patent number 4,261,452
- Issue date Apr 14, 1981
- Ingersoll-Rand Company
- Robert E. Barrows
- F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Information Patent Grant
Governor device
- Patent number 4,090,821
- Issue date May 23, 1978
- Ingersoll-Rand Company
- Robert Earl Barrows
- G05 - CONTROLLING REGULATING