1990 is used as year zero in this figure. Counts can be conducted at different levels and in accordance with different years. Trends presented here capture applications, grants and procedural republications. Other counts such as priority filings of applications provide insights into underlying innovative activity.
– to verify whether it isn't poisoning the air in your home or consuming too much energy. Have it replaced once every 15 years – to benefit from the technological advances that render new boilers more energy-efficient.
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