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Expired Canadian patentCanada

Multibit hand tool with improved bit insertion

CA 1248788 A · Owner: Corona, Franco O. · Inventors: Corona, Antonio; Corona, Franco O.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A multibit hand tool has a plurality of bits provided in a circular pattern within a handle magazine. A rotatable selector cup at the end of the handle permits selection of a desired bit from the magazine and placement in a chuck in the handle. An elongate slot is provided in the cup to permit the manipulation of the bit. An improved guidance arrangement is provided for guiding movement of a bit withdrawn from the handle magazine for insertion in the chuck. The guide device prevents rotation of the screwdriver bit while being transferred from the magazine to the chuck. An improved arrangement is provided for retaining a bit withdrawn from the handle magazine within the bit selector cup so …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted January 17, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 29, 1986
GrantedJanuary 17, 1989
Term endedJanuary 17, 2006
Patent numberCA 1248788 A
Classification (IPC)B25B23/16 +1 more

Timeline

Timeline From CIPO dates

1987198919911993199519971999200120032005Application filedJan 29, 1986Patent grantedJan 17, 1989Term endedJan 17, 2006

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.