Related:

• All warranty and guarantee clauses become null and void upon payment of invoice.
• All warranties expire upon payment of invoice. -- Murphy's Law No. 10
• Interchangeable parts won't. -- The RPCISPE's Eleventh Universal Law
• Actual service conditions cannot be met in the laboratory. -- The RPCISPE's Fourth Universal Law
• Operation instructions shipped with the unit will be discarded by Receiving.
  -- The RPCISPE's Fourteenth Universal Law...
• Parts that cannot be assembled incorrectly will be. -- The RPCISPE's Tenth Universal Law
• Specified Service Conditions will be exceeded. -- The RPCISPE's Sixteenth Universal Law
• That device requiring the most service will be least accessable.
  -- The RPCISPE's Fifteenth Universal Law...
• All delivery promises must be multiplied by a factor of 2.0. -- The RPCISPE's Eighth Universal Law