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US Patent: 2,576,286
Quick Release Attachment For Vise Grip Pliers
Murray Eisenberg - New York, NY

USPTO Classifications:
81/371, 81/380, 81/399

Tool Categories:
wrenches : pliers type wrenches : locking pliers


Channellock - Meadville, PA
BARCALO - Buffalo, NY


Patent Dates:
Applied: Apr. 05, 1945
Granted: Nov. 27, 1951

Patent Pictures: [ 1 | 2 | 3 ]
Murray Eisenberg Pat. Nov. 27, 1951
USPTO pdf tiff
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The feature of interest in this patent is the lock release positioned on the outside of the movable handle. This patent is connected to the lock release on the GRIPLOCK No. 910 in a February 1966 ad. This patent along with 2,531,285 and 2,997,903 is cited on ChanneLLock No. 910 Grip-Lock self-adjusting locking pliers.

It also appears on BARCALO LOCK-JAW locking pliers.

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