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Patent 7666 Summary

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Claims and Abstract availability

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(12) Patent: (11) CA 7666
(21) Application Number: 7666
(54) English Title: IMPROVEMENT ON PLOUGHS
(54) French Title: PERFECTIONNEMENTS DES CHARRUES
Status: Term Expired - Post Grant Beyond Limit
Bibliographic Data
(51) International Patent Classification (IPC): N/A
(72) Inventors :
  • MCDIARMID, ARCHIBALD (Canada)
(73) Owners :
  • ARCHIBALD MCDIARMID
(71) Applicants :
(74) Agent:
(74) Associate agent:
(45) Issued: 1877-07-17
(22) Filed Date:
Availability of licence: N/A
Dedicated to the Public: N/A
(25) Language of filing: English

Patent Cooperation Treaty (PCT): No

(30) Application Priority Data: None

Abstracts

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Claims

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Claim The convex shape of that portion of the board A contained between lines H D and E F indicated by sections 1 2 3 4 of the main bearing K G, so that in turning a furrow concave on the under side the line K G gradually recedes from the edge of the furrow H D.
Description

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Representative Drawing

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Administrative Status

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Event History

Description Date
Inactive: Expired (old Act Patent) latest possible expiry date 1895-07-17
Grant by Issuance 1877-07-17

Abandonment History

There is no abandonment history.

Owners on Record

Note: Records showing the ownership history in alphabetical order.

Current Owners on Record
ARCHIBALD MCDIARMID
Past Owners on Record
None
Past Owners that do not appear in the "Owners on Record" listing will appear in other documentation within the application.
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