Note 9 - Property and Equipment

12 Months Ended

Dec. 31, 2017

9 .	Property and Equipment

The major classes of property and equipment are as follows:

	Useful Life (in years)				2017		2016
Production machinery and equipment			5		$	575,091	$	810,996
Other machinery and equipment, primarily computers and research equipment		3	–	5		293,757		407,201
Furniture and fixtures			7			4,327		645,922
Purchased software			3			320,435		470,669
Leasehold improvements*	Term of Lease					12,448		897,584
Total property and equipment					$	1,206,058	$	3,232,372

We amortize leasehold improvements over the term of the lease, which in all cases is shorter than the estimated useful life of the asset.

property or equipment was under capital lease at

December 31,

2017

and

2016.

During

2017,

2016

and

2015,

we recorded

$232,000,

$496,000

and

$562,000,

respectively, of depreciation and amortization related to property and equipment. See Note

(i).

Property and equipment, net of accumulated amortization, in the amount of

$70,973

as of

December 31, 2016

has been reclassified to noncurrent assets associated with discontinued operations. See Note