Dating by patent numbers

Only vibroplex patents listed that appear as last patent num- date and the next patent’s filing date patent number filing date patent date. This posting explains about british patent numbers, both old and new at present there are two kinds of numbers the first “application number” is allocated when a patent is applied for, and is in the format 0517653 where 05 indicates the year of filing, 2005, and 17653 indicates a number. Many antiques and collectibles are marked with a patent number, this can be a useful asset to help establish a date the item was manufactured. How to find a patent number for a patent number inventions patented between 1790 and 1975 will be listed in the database with the patent number and issue date.

Pez collectors store : patent numbers of dispensers in general, patent numbers can give an indication but not a definitive date as to when a dispenser was produced. The united states patent number for each year is the first patent issued that calendar year always remember, patent date is only when something was patented, not when it was actually made, many items were manufactured for many years after it was patented. How old is it tips to help you determine the age of your antique clock using patent numbers to determine age: united states patents: us patent.

Us patent no/date reference table year patent # year patent # ----- ----- 1836 1 - 109 1900 640,167 - 664,826 1837 110 - 545 1901 664,827. Each country has its own database, and has different methods of formatting patent numbers for example, a japanese patent begins with the letters “jp” for japanese patents issued before may of 1996, the letters “jp” are followed by the last two years of the japanese emperor year number some countries start patent.

Use this table of patent numbers to date your collectibles digger odell publications books about bottles, bottle digging and bottle collecting.

182 rows  a detailed patent technology monitoring team report, titled issue dates and patent numbers since 1836, which contains first patent numbers and the day of issue for patents issued since 1963, also may be of interest in addition, the patent and trademark office has a file that lists all patent numbers and their associated dates of grant.

  • U s patent numbers and corresponding dates these dates are a handy reference that you may find useful for figuring out when an item was first produced for example, if you find something with a patent number of 1,941,448 on it, you will find in the chart below that it was patented in 1933.
  • An object has to have been made after the date the patent number was granted patent numbers in most countries remain in force for an average of about 15 years therefore, an object with a patent number granted in 1900.

Patent dating - the patent number molded onto the stem changed every time pez, inc made a significant change in the design of the dispenser, and reapplied for a new patent number by looking at the patent number, you can also determine a. Dating english registry marks an item with a registry mark or number could have been produced before patent office chancery lane. Biddington's provides a list of patent numbers cross-referenced with the dates they were issued to help in determining the age of antiques and collectibles.

Dating by patent numbers
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