Leo J. Kerivan

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Somerset, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Perforated web feeding apparatus
- Patent number 4,714,185
- Issue date Dec 22, 1987
- Precision Handling Devices, Inc.
- Leo J. Hubbard
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Perforated web feeding apparatus
- Patent number 4,706,861
- Issue date Nov 17, 1987
- Precision Handling Devices, Inc.
- Leo J. Kerivan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Forms feeding apparatus
- Patent number 4,616,773
- Issue date Oct 14, 1986
- Precision Handling Devices Inc.
- Leo J. Kerivan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Drive mechanism especially for web feed tractors
- Patent number 4,614,508
- Issue date Sep 30, 1986
- Precision Handling Devices Inc.
- Leo Kerivan
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Tractor apparatus
- Patent number 4,611,737
- Issue date Sep 16, 1986
- Precision Handling Devices Inc.
- John D. Hubbard
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS