+def format_details_patent(entry):
+ line = []
+ line.append(format_field(entry, 'number', pre='Pat. '))
+ line.append(format_field(entry, 'month', post=' ') + \
+ format_field(entry, 'year'))
+ line.append(format_field(entry, 'note'))
+
+ line = filter(lambda l: l != "", line)
+ return [", ".join(line)]
+