Exhibit premarked by defendant

• Author: Joseph M. Potenza - Christopher J. Renk - Thomas K. Pratt - Erik S. Maurer
• Pages: 175-230

Section I

Exhibits Premarked

by Defendant

175

SECTION NO. Page

I-1 Exhibit DX-1

U.S. Patent No. 5,351,524 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176

I-2 Exhibit DX-2

Prosecution History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

I-3 Exhibit DX-3

E-mail dated December 10, 2011 from Sue Parrish to Charley Cooley . . . . . . . . . . . . . . 214

I-4 Exhibit DX-4

Letter dated October 7, 1989 from Grandpa Parrish

to George Parrish (with accompanying drawing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215

I-5 Exhibit DX-5

Memo dated October 18, 2009 from M. C. Pringle to

S. N. Nellis, A. C. Edgar, and P. T. Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219

I-6 Exhibit DX-6

Memo dated November 14, 2005 from A. C. Edgar to S. N. Nellis and P. T. Lamp . . . . . 220

I-7 Exhibit DX-7

Memo dated November 15, 2005 from S. N. Nellis to A. C. Edgarand and P. T. Lamp . . . 222

I-8 Exhibit DX-8]

Memo dated May 24, 2006 from from S. N. Nellis to M. C. Pringle and A. C. Edgar . . 223

I-9 Exhibit DX-9

Memo dated January 7, 2013 from S. N. Nellis to M. C. Pringle . . . . . . . . . . . . . . . . . . . 224

I-10 Exhibit DX-10

Memo dated October 5, 2005 from Charley Cooley to George Parrish . . . . . . . . . . . . . . 225

I-11 Exhibit DX-11

E-Mail dated August 10, 2012 from J. Nelsonn to G. Eakin . . . . . . . . . . . . . . . . . . . . . . . 226

I-12 Exhibit DX-12

Chart — PMC Does Not Infringe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227

I-13 Exhibit DX-13

Chart — Parrish ‘056 Obvious . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 228

I-14 Exhibit DX-14

Chart — Parrish ‘056 Invalid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229

I-15 Exhibit DX-15

Chart — PMC Injured By Bullivant’s Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 230

176 Section I

SECTION I-1

United States Patent [19] [11] Patent Number: 5,351,524

L.J. Bullivant [45] Date of Patent: April 30, 2001

[54] Extension Level

[75] Inventors: Lingham J. Bullivant, Zion City, IL

[73] Assignee:

[21] Appl. No.: 1,189

[22] Filed: January 12, 1999

References Cited

U.S. PATENT DOCUMENTS

691,063 Leah 1/14/02

1,403,676 Eltag 1/17/22

1,413,056 Parrish et al. 4/16/22

1,450,904 Hunter 10/9/22

1,848,003 Chalupny 3/1/22

2,419,451 Keller 4/22/17

ABSTRACT

This invention relates to a hand instrument commonly used by carpenters,

mechanics and others for truing surfaces in vertical or horizontal directions,

and can be described as an extension device for obtaining greater accuracy

in taking measurements by employing parts that are extensible. This

invention allows a user to employ the leveling instrument using a shorter

leveling device combined with an extension part to increase the accuracy

obtained with a longer level. The shorter instrument is capable of collapsing

so that it may be contained in a shorter tool case or cabinet. The invention

also provides an extension level in which the extension part is accurately

held with respect to the level indicating means to prevent lost motion and

inaccuracies.

2 Claims, 4 drawings

DEFENDANT’S

EXHIBIT

No. 1

Exhibits Premarked by Defendant 177