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Note 7 - Product Warranties (Tables)
9 Months Ended
Jun. 27, 2015
Notes Tables  
Schedule of Product Warranty Liability [Table Text Block]
   
Nine Months Ended
 
   
June 27,
   
June 28,
 
   
2015
   
2014
 
Accrued liability at beginning of period
  $ 257,860     $ 318,824  
Increase in reserve
    197,850       91,954  
Repairs and replacements
    (164,681 )     (158,258 )
Accrued liability at end of period
  $ 291,029     $ 252,520