Stumpf; Walter
Patent Applications and Registrations
Patent applications and USPTO patent grants for Stumpf; Walter.The latest application filed is for "piston ring".
- Stumpf; Walter - Essen DE
- Stumpf, Walter - Dunwoody GA
- Stumpf; Walter - Betzdorf DE
- Stumpf; Walter - Munster IN
| Patent | Date |
|---|---|
| Piston ring Grant 11,408,508 - Stumpf , et al. August 9, 2 | 2022-08-09 |
| Piston Ring App 20200309263 - STUMPF; WALTER ; et al. | 2020-10-01 |
| Modular pocketed spring construction App 20030110566 - Stumpf, Walter | 2003-06-19 |
| Jacketed cushioning elements and assemblies thereof in mattresses and upholstery Grant 6,347,423 - Stumpf February 19, 2 | 2002-02-19 |
| Method and apparatus for the manufacture of pocketed springs Grant 6,260,331 - Stumpf July 17, 2 | 2001-07-17 |
| Belted pocketed springs and assemblies thereof Grant 6,131,892 - Stumpf October 17, 2 | 2000-10-17 |
| Apparatus for producing string of pocket coils Grant 6,101,697 - Stumpf , et al. August 15, 2 | 2000-08-15 |
| Box spring core with compartmentalized springs Grant 5,319,815 - Stumpf , et al. June 14, 1 | 1994-06-14 |
| Pocketed coil strings having a flat overlap side seam Grant 4,986,518 - Stumpf January 22, 1 | 1991-01-22 |
| Mattress or cushion spring array Grant 4,895,352 - Stumpf January 23, 1 | 1990-01-23 |
| Method for providing pocketed coil strings having a flat overlap side seam Grant 4,854,023 - Stumpf August 8, 1 | 1989-08-08 |
| Innerspring construction Grant 4,578,834 - Stumpf April 1, 1 | 1986-04-01 |
| Method and apparatus for manufacturing innerspring constructions Grant 4,566,926 - Stumpf January 28, 1 | 1986-01-28 |
| Apparatus for manufacturing pocketed coil springs Grant 4,565,046 - Stumpf January 21, 1 | 1986-01-21 |
| Independent block assembly of springs Grant 4,523,344 - Stumpf , et al. June 18, 1 | 1985-06-18 |
| Boxspring having coil compression stops Grant 4,519,107 - Dillon , et al. May 28, 1 | 1985-05-28 |
| Ultrasonic separation apparatus Grant 4,491,491 - Stumpf January 1, 1 | 1985-01-01 |
| Coil spring construction Grant 4,485,506 - Stumpf , et al. December 4, 1 | 1984-12-04 |
| Pocketed spring assembly Grant 4,451,946 - Stumpf June 5, 1 | 1984-06-05 |
| Method and apparatus for making a series of pocketed coil springs Grant 4,439,977 - Stumpf April 3, 1 | 1984-04-03 |
| Apparatus for making assemblies of pocketed springs Grant 4,401,501 - Stumpf August 30, 1 | 1983-08-30 |
| Thermally welded spring pockets Grant 4,234,983 - Stumpf November 25, 1 | 1980-11-25 |
| Pocketed spring assembly Grant 4,234,984 - Stumpf November 25, 1 | 1980-11-25 |
| Upholstery coil transfer mechanism Grant 4,165,808 - Stumpf August 28, 1 | 1979-08-28 |
| Method For Manufacturing Box Spring Grant 3,789,495 - Stumpf February 5, 1 | 1974-02-05 |
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