1 If the patent application was filed on or after June 8, 1995, the starting patent term is 20 years. 2  This accounts for the vast majority of patents in force today. 3  The 20 year term is calculated based upon the priority filing date, not counting provisional application or the original filing in a foreign country.
The report indicates that the median installed price of PV systems completed in 2012 was $5.30/W for residential and small commercial systems smaller than 10 kilowatts (kW) in size and was $4.60/W for commercial systems of 100 kW or more in size.
Split systems consist of both indoor and outdoor components. The outdoor unit is an air conditioner to provide cooling; the indoor unit is a furnace to produce heat. Split systems usually cost between $2,000 and $11,000; the average cost is $6,625. Costs will vary based on the type of units included.dditional ductwork or repairs can increase the installation fees by several thousand dollars. In conclusion, the average homeowner can expect to pay between $5,000 and $11,000 for a completely installed HVAC system.