Patents
Sitemap › B43 - Writing or drawing implements; Bureau accessories › B43M - Bureau accessories not otherwise provided for › B43M 7 - Devices for opening envelopes
Patents for B43M 7 - Devices for opening envelopes (428)
10/1991
10/08/1991US5054620 Apparatus for the automated processing of bulk mail and the like
10/01/1991US5052875 Automated envelope handling system
10/01/1991US5052168 Method and apparatus for spreading open envelopes
08/1991
08/06/1991CA2034864A1 Method and apparatus for candling envelopes
08/06/1991CA2034863A1 Method and apparatus for spreading open envelopes
07/1991
07/30/1991US5036190 Method and apparatus for candling envelopes
03/1991
03/26/1991US5001833 Letter opener
02/1991
02/21/1991WO1991001893A1 Mechanical letter-opener
12/1990
12/12/1990EP0401890A1 A small size paper cutter for letter opening
10/1990
10/14/1990CA2368036A1 In-line rotary inserter
09/1990
09/26/1990EP0388443A1 Letter-opener.
07/1990
07/10/1990US4940144 Automatic envelope opener and envelope for use therewith
06/1990
06/19/1990US4934892 Envelope processing apparatus
05/1990
05/22/1990US4926729 Envelope opener
05/03/1990WO1990004525A1 Letter opener
05/01/1990US4921388 Envelope opener and load separator
03/1990
03/20/1990US4909021 Automatic envelope opener
02/1990
02/22/1990WO1990001425A1 Letter-opener
01/1990
01/17/1990EP0350646A1 A letter opener
01/16/1990US4893454 Envelope opening machine and method
11/1989
11/22/1989CN1037303A Improved letter opener
10/1989
10/17/1989US4873767 Safety letter opener
09/1989
09/26/1989US4868942 Measuring envelope opener device having a stamp dispenser
09/19/1989US4866915 Envelope contents removal
09/19/1989US4866908 Table-top mail extraction apparatus having separate, connectable power unit
09/12/1989CA1259231A1 Envelope opener
09/05/1989US4863037 Envelope extractor
06/1989
06/01/1989WO1989004771A1 Improved letter opener
02/1989
02/14/1989US4803782 Letter opener
08/1988
08/31/1988EP0279870A1 Envelope-emptying device
08/31/1988EP0279857A1 Apparatus for the automated processing of bulk mail and the like.
05/1988
05/03/1988US4741105 Combined envelope opener and pencil sharpener unit
04/1988
04/12/1988US4736939 Envelope transport guide
03/1988
03/10/1988WO1988001543A1 Apparatus for the automated processing of bulk mail and the like
12/1987
12/29/1987US4715164 High speed envelope flap opener
12/08/1987US4711031 Envelope opener
11/1987
11/05/1987DE3614860A1 Letter opener
10/1987
10/07/1987CN86210038U Multi-functional office instrument
09/1987
09/15/1987US4693004 Envelope opener
08/1987
08/26/1987EP0233818A1 Envelope processing apparatus
06/1987
06/10/1987EP0225288A2 Apparatus for monitoring the thickness of an object
03/1987
03/17/1987US4649694 Envelope contents extraction system
01/1987
01/13/1987USRE32328 Mail extracting and sorting desk
08/1986
08/13/1986EP0190849A1 Letter opener
07/1986
07/30/1986EP0188587A1 Device for cutting envelopes and its application to an installation for the treatment of mail
06/1986
06/11/1986EP0073815B1 Device for opening envelopes or similar objects
04/1986
04/15/1986US4581823 Letter opener
03/1986
03/18/1986US4576287 Apparatus and method for checking the contents of envelopes and sorting documents by thickness
02/1986
02/13/1986WO1986000852A1 Device for cutting envelopes and its application to an installation for the treatment of mail
01/1986
01/22/1986EP0169145A2 Envelope sorting apparatus
11/1985
11/19/1985US4553459 Methods and an apparatus for trilaterally opening an envelope
07/1985
07/16/1985US4528707 Combination scissors and paper knife
07/09/1985US4527455 Device for opening envelopes or the like
10/1984
10/16/1984CA1176123A1 Envelope processing machine and method
10/09/1984CA1175719A1 Method and apparatus for opening envelopes
08/1984
08/07/1984CA1172210A1 Mailer set having offset thumb notches
05/1984
05/16/1984EP0108465A1 A method and an apparatus for trilaterally opening an envelope
12/1983
12/13/1983US4419915 Envelope opener device
07/1983
07/12/1983CA1149690A1 Opening of envelope with darkened edges
06/1983
06/28/1983US4389780 Bag opening device for can openers
06/21/1983US4388847 Envelope opener
06/21/1983US4388793 Apparatus for emptying envelopes
03/1983
03/16/1983EP0073815A1 Device for opening envelopes or similar objects.
03/15/1983US4376363 Envelope processing machine having visual processing verification means
02/1983
02/15/1983US4373848 Method and apparatus for exposing contents of an opened envelope with gravity assist
11/1982
11/16/1982CA1135459A1 Envelope opening process and composition
11/02/1982US4356684 Batch method and apparatus for heating envelope edges to separate the envelope panels
11/02/1982US4356683 Method and apparatus for holding and conveying a batch of envelopes to facilitate the opening of the envelopes
11/02/1982US4356679 Apparatus for applying a degrading chemical to envelopes
10/1982
10/12/1982US4353197 Content activated envelope extraction
09/1982
09/30/1982WO1982003206A1 Device for opening envelopes or similar objects
06/1982
06/23/1982EP0054347A1 A mailer set having offset thumb notches
06/08/1982US4333300 Envelope processing machine and method
06/08/1982CA1125416A1 Envelope processing machine having visual processing verification means
05/1982
05/04/1982CA1123082A1 Envelope processing machine
03/1982
03/31/1982EP0048485A2 Method and apparatus for exposing contents of an opened envelope with gravity assist
03/16/1982US4319444 Envelope processing machine with incremental feed mechanism
03/16/1982CA1119903A1 Folded paper edge opening process
03/09/1982US4318322 Envelope cutter apparatus
12/1981
12/09/1981EP0041314A1 Envelope processing machine and method
10/1981
10/20/1981US4295321 Envelope processing machine
10/07/1981EP0037100A1 Method and apparatus for opening envelopes
10/07/1981EP0036941A1 Apparatus for removing the contents of envelopes
09/1981
09/30/1981EP0036509A1 A method of opening envelopes
06/1981
06/16/1981US4272943 Envelope processing machine and method
06/09/1981US4271656 Envelope processing machine
04/1981
04/21/1981US4262471 Envelope processing machine
04/21/1981CA1099601A1 Envelope opener
04/08/1981EP0026305A1 Envelope opening process and composition
03/1981
03/18/1981EP0025294A1 Improved envelope processing machine having visual processing verification means
01/1981
01/07/1981EP0020484A1 Folded paper edge opening process
11/1980
11/18/1980US4233800 Envelope opener
10/1980
10/21/1980US4228634 Envelope opening process and composition
09/1980
09/16/1980US4222216 Opening of envelope with darkened edges
08/1980
08/20/1980EP0014446A1 Opening of envelope with darkened edges
07/1980
07/22/1980CA1081932A1 Letter opener device
07/15/1980CA1081645A1 Content activated envelope extraction
06/1980
06/03/1980US4205506 Envelope opening device and envelope stuffing machine using same
05/1980
05/27/1980CA1078320A1 Mail extracting and sorting desk
04/1980
04/17/1980WO1980000687A1 Folded paper edge opening process
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