First Trust Intermediate Duration Preferred & Income Fund Research and Development Expenses 1970-1969 | FPF
First Trust Intermediate Duration Preferred & Income Fund 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.
| First Trust Intermediate Duration Preferred & Income Fund Annual Research and Development Expenses (Millions of US $) |
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| First Trust Intermediate Duration Preferred & Income Fund Quarterly Research and Development Expenses (Millions of US $) |
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