Template:Techtype

This is the "Techtype" template. It should be called in the following format:

{{Techtype
|Enclosing categories=
|Subcategories=
|Keywords=
|Start year=
|End year=
}}

Edit the page to see the template text. This template defines the table "Techtypes". View table.

Notes

Start year and end year refer to the dates of official validity, the period when the when a patent examiner would officially assign these codes. The period ends when this category system is superseded.