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Class Information
Number: 83/912
Name: Cutting > Envelope openers
Description: Cutting through an envelope adjacent one edge thereof so as to gain access to its contents without damaging them.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7231859 |
Mail opener apparatus |
Jun. 19, 2007 |
| 6912827 |
Apparatus for opening envelopes |
Jul. 5, 2005 |
| 6725752 |
Mail processing machine |
Apr. 27, 2004 |
| 6612211 |
Apparatus for opening envelopes |
Sep. 2, 2003 |
| 6505534 |
Method and apparatus for processing envelopes containing contents |
Jan. 14, 2003 |
| 6439095 |
Paper cassette provided with a cutter |
Aug. 27, 2002 |
| 6260462 |
Method and device for opening cartons |
Jul. 17, 2001 |
| 6230471 |
Method and apparatus for processing envelopes containing contents |
May. 15, 2001 |
| 6125732 |
Letter opener |
Oct. 3, 2000 |
| 5974929 |
Combined letter opener and letter punch |
Nov. 2, 1999 |
| 5946996 |
Automatic feed chadless envelope slitter |
Sep. 7, 1999 |
| 5474414 |
Automatic content separating system |
Dec. 12, 1995 |
| 5440861 |
Method and apparatus for emptying envelopes |
Aug. 15, 1995 |
| 5374152 |
Automatic content separating system |
Dec. 20, 1994 |
| 5188504 |
Envelope opener and load separator |
Feb. 23, 1993 |
| 5156515 |
Machine for extracting contents from envelopes |
Oct. 20, 1992 |
| 5117524 |
Device for cutting a tape of a roll of tapes and opening an envelope |
Jun. 2, 1992 |
| 5096360 |
Envelope opener and load separator |
Mar. 17, 1992 |
| 5061146 |
Envelope opener and load separator |
Oct. 29, 1991 |
| 5054620 |
Apparatus for the automated processing of bulk mail and the like |
Oct. 8, 1991 |
| 5054700 |
Apparatus for the automated processing of bulk mail and the like |
Oct. 8, 1991 |
| 5052875 |
Automated envelope handling system |
Oct. 1, 1991 |
| 5001833 |
Letter opener |
Mar. 26, 1991 |
| 4934892 |
Envelope processing apparatus |
Jun. 19, 1990 |
| 4926729 |
Envelope opener |
May. 22, 1990 |
| 4921388 |
Envelope opener and load separator |
May. 1, 1990 |
| 4866915 |
Envelope contents removal |
Sep. 19, 1989 |
| 4863037 |
Apparatus for the automated processing of bulk mail and the like |
Sep. 5, 1989 |
| 4649694 |
Envelope contents extraction system |
Mar. 17, 1987 |
| 4553459 |
Methods and an apparatus for trilaterally opening an envelope |
Nov. 19, 1985 |
| 4527455 |
Device for opening envelopes or the like |
Jul. 9, 1985 |
| 4419915 |
Envelope opener device |
Dec. 13, 1983 |
| 4388847 |
Envelope opener |
Jun. 21, 1983 |
| 4360970 |
Device for opening sealed food bags |
Nov. 30, 1982 |
| 4356684 |
Batch method and apparatus for heating envelope edges to separate the envelope panels |
Nov. 2, 1982 |
| 4356683 |
Method and apparatus for holding and conveying a batch of envelopes to facilitate the opening of the envelopes |
Nov. 2, 1982 |
| 4356679 |
Apparatus for applying a degrading chemical to envelopes |
Nov. 2, 1982 |
| 4333300 |
Envelope processing machine and method |
Jun. 8, 1982 |
| 4318322 |
Envelope cutter apparatus |
Mar. 9, 1982 |
| 4295321 |
Envelope processing machine |
Oct. 20, 1981 |
| D260133 |
Letter opener |
Aug. 11, 1981 |
| 4233800 |
Envelope opener |
Nov. 18, 1980 |
| 4222216 |
Opening of envelope with darkened edges |
Sep. 16, 1980 |
| 4194342 |
Folded paper edge opening process |
Mar. 25, 1980 |
| 4159611 |
Envelope processing machine and method |
Jul. 3, 1979 |
| 4144786 |
Envelope edge slitting apparatus |
Mar. 20, 1979 |
| 4142430 |
Envelope opener |
Mar. 6, 1979 |
| 4123890 |
Envelope opening apparatus and method |
Nov. 7, 1978 |
| 4018033 |
Daylight film handling system |
Apr. 19, 1977 |
| 4016708 |
Envelope processing machine |
Apr. 12, 1977 |
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