Flaherty & Crumrine Preferred and Income Opportunity Fund Inc. Research and Development Expenses 1970-1969 | PFD
Flaherty & Crumrine Preferred and Income Opportunity Fund Inc. research and development expenses from 1970 to 1969. Research and development expenses can be defined as an expense arising from studies and product development processes.
| Flaherty & Crumrine Preferred and Income Opportunity Fund Inc. Annual Research and Development Expenses (Millions of US $) |
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| Flaherty & Crumrine Preferred and Income Opportunity Fund Inc. Quarterly Research and Development Expenses (Millions of US $) |
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