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Patents for inventions (or, or as USPTO calls them, Utility patents) are usually at least two pages, with the first page showing patent drawings and subsequent pages stating the Specifications and Claims. If you go back to step 6, you will see the Current U. other "match safe", "snuff box" or "spoon" patents.

You can also obtain classification numbers at "Tools to Help in Searching by Patent Classification" at step 3.

You now have a list of patents of a particular class for the range of years you have specified, and they will be in chronological order based on the date of the Tuesday of the week in which the patent was granted.

From here, you can access an individual patent file by following steps 5 & 6 above.

Unfortunately for those interested in historical research, pre-1976 patents are only searchable by patent number or classification.

If you only have a pre-1976 patent date, you also may be able to find the patent if you can hit upon the correct class for the item (see "Tools to Help..." above) and track the patent down, hit and miss.

You cannot "Advanced Search" by date or inventor's name, etc.as you can with post-1975 patents, so that searching for patents by an inventor named Edison before 1976 will give you "0" hits.Collectors frequently want to find out about the history of the pieces they collect.One rich source of information is found in the United State Patent Office which registers invention patents, design patents, trademark registrations, and label registrations.If your collectible has a patent number then information about its history is recorded.Most any large city library will have a complete set of these documents, the most useful to bottle collectors is the Patent Office Official Gazette .

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