Duff & Phelps Utility and Infrastructure Fund Inc. Research and Development Expenses 1970-1969 | DPG
Duff & Phelps Utility and Infrastructure 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.
| Duff & Phelps Utility and Infrastructure Fund Inc. Annual Research and Development Expenses (Millions of US $) |
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| Duff & Phelps Utility and Infrastructure Fund Inc. Quarterly Research and Development Expenses (Millions of US $) |
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