CA12235A - Improvements on screw heads - Google Patents

Improvements on screw heads

Info

Publication number
CA12235A
CA12235A CA000012235A CA12235DA CA12235A CA 12235 A CA12235 A CA 12235A CA 000012235 A CA000012235 A CA 000012235A CA 12235D A CA12235D A CA 12235DA CA 12235 A CA12235 A CA 12235A
Authority
CA
Canada
Prior art keywords
screw heads
heads
screw
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000012235A
Other languages
French (fr)
Inventor
John Eckford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of CA12235A publication Critical patent/CA12235A/en
Expired legal-status Critical Current

Links

CA000012235A Improvements on screw heads Expired CA12235A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA12235T

Publications (1)

Publication Number Publication Date
CA12235A true CA12235A (en) 1881-01-19

Family

ID=45128781

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000012235A Expired CA12235A (en) Improvements on screw heads

Country Status (1)

Country Link
CA (1) CA12235A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683217A (en) * 1996-03-27 1997-11-04 Walther; Uli Self-counter-sinking screw with cutting receiving pockets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5683217A (en) * 1996-03-27 1997-11-04 Walther; Uli Self-counter-sinking screw with cutting receiving pockets
USRE36741E (en) * 1996-03-27 2000-06-20 Walther; Uli Self-countersinking screw with cutting receiving pockets

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