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EXCEL - IDEA: XBRL DOCUMENT - BISON INSTRUMENTS INCFinancial_Report.xls
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v2.4.0.6
Note 4. Income taxes (Detail) (USD $)
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate 38.40% 38.40%
Operating Loss Carryforwards $ 1,240,500 $ 1,996,500
Deferred Tax Assets, Valuation Allowance 476,000 767,000
Valuation Allowances and Reserves, Period Increase (Decrease) $ 291,000