| 2021-11-28 | Blood-typing letters |
| 2021-09-21 | Blood-typing system |
| 2021-07-06 | Blood classification system |
| 2021-06-24 | Blood-typing system |
| 2021-04-27 | Blood-typing letters |
| 2021-01-25 | Blood grouping system |
| 2020-03-12 | ___ group (hospital classification) |
| 2019-11-16 | Kind of system in a hospital |
| 2019-08-18 | Blood type system |
| 2019-06-09 | Blood-typing letters |
| 2019-05-30 | System used in hematology |
| 2019-04-07 | Blood-typing letters |
| 2018-02-21 | Blood-typing letters |
| 2017-11-30 | Blood letters |
| 2016-12-31 | Classification system used in some banks |
| 2016-08-02 | Blood-typing letters |
| 2016-03-11 | Blood letters |
| 2015-08-30 | Blood type system |
| 2015-07-29 | Blood-typing system |
| 2014-11-09 | Blood type system |
| 2014-06-22 | Blood-typing letters |
| 2013-12-23 | Blood classification system |
| 2013-11-21 | Red Cross letters |
| 2013-07-05 | Blood-typing system |
| 2013-01-24 | Type letters |
| 2012-12-12 | Blood-typing system |
| 2012-03-11 | ___ blood-typing |
| 2011-11-25 | Blood-typing syst. |
| 2011-08-07 | Blood-typing system |
| 2011-06-01 | Blood-typing letters |
| 2011-05-18 | Blood type letters |
| 2011-01-30 | ___ system (way of classifying blood) |
| 2010-09-29 | Blood-typing syst. |
| 2009-06-06 | Typing letters? |
| 2008-05-21 | Blood-typing system |
| 2008-05-18 | Blood-typing letters |
| 2007-08-23 | Blood type letters |
| 2007-04-10 | Blood-typing letters |
| 2006-10-18 | Blood type syst. |
| 2006-10-07 | Typing letters? |
| 2006-02-21 | Blood-typing system |
| 2005-12-31 | Typing system |
| 2005-12-12 | Blood-typing letters |
| 2005-12-06 | Blood-typing system |
| 2005-11-27 | Blood classification |
| 2005-11-23 | Blood typing system |
| 2005-10-06 | Blood-type letters |
| 2004-09-17 | Blood letters |
| 2004-03-09 | Blood-typing letters |
| 2004-01-11 | Blood classification system |
| 2003-07-06 | Blood system |
| 2003-06-29 | Blood letters |
| 2002-02-13 | Blood-typing system |
| 2000-07-29 | ___ system |
| 1999-12-19 | Medicine's ___ system |
| 1999-12-04 | Kind of system, in medicine |
| 1997-10-03 | Blood letters |
| 1995-03-31 | _____ system (blood typing) |