PATENT NUMBERS AND DATES

If you have ever had trouble dating old instruments, this list may be a help. It shows the first patent number issued in each year, so if you have a patent number, this easily yields the approximate date to begin with. If something is marked "Patent Pending" you can reasonably assume it was made within a year or two of the patent being issued. Remember that there could have been a year or more between the date of application and the final date of issue.

PATENT NUMBERS AND DATES
DateNumber DateNumber DateNumber DateNumber
1836 11837 1101838 54618391001
18401465184119231842241318432901
18443395184538751846434818474914
18485409184959931850698118517865
1852862218539512185410358185512117
185614009185716324185819010185922477
186026642186131005186234005186337266
186441047186545685186651784186760658
1868729591869855031870984601871110617
1872122304187313450418741461201875158350
1876171641187718581318781987331879211078
1880223211188123613718822516851883269820
1884291016188531016318863334941887355291
1888375720188939530518904186651891443987
1892466315189348897618945117441895531619
1896552502189757436918985964671899616871
1900640167190166482719026903851903717521
1904748567190577883419068086181907839799
1908875679190990843619109450101911980178
19121013095191310493261914108326719151123212
19161166419191712103891918125145819191290027
19201326899192113640631922140194819231440362
19241478996192515215901926156804019271612700
19281654521192916968971930174218119311787424
19321839190193318926631934194144919351985878
19362026516193720063091938210400419392142080
19402185170194122274181942226851019432307007
19442338081194523661541946239185619472413675
19482433824194924577971950249204419512536016
19522580379195326240461954266456219552698434
19562728913195727757621958281856719592866973
19602919443196129666811962301510319633070801
19643116487196531638651966322672919673295143
19683360800196934199071970348747019713551909
19723631539197337077291974378191419753858241
19763930271197740005201978406581219794131952
19804180867198142427571982430862219834366579
19844423523198544908551986456259619874633526
19884716594198947946521990489033519914980927
19925077836199351758861994527484619955377359
19965479658199755904201998570406219995855021


Dating A.C. Fairbanks & Vega Banjos
Dating C. F. Martin Instruments
Identifying S. S. Stewart Banjos
Return to Index