Patent US2920008A successfully refreshed from Google Patents.
US2920008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated protective sole
Assignee: Gentex Corp
•
Filing: 1957-03-22
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Granted: 1960-01-05
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Expires: 1977-03-22
Abstract
No abstract record available.
Inventors
- 👤 Leonard P Frieder
- 👤 Walter S Finken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:03
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/02; A43B13/04; A43B7/00; A43B7/32; B; B32; B32B; B32B27/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24033; Y10T428/24273; Y10T428/24322; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A LAMINATED PROTECTICE SOLE INCLUDING IN COMBINATION A PLURALITY OF STACKED FIBROUS LAMINATES, SAID LAMINATES IMPREGNATED WITH SYNTHETIC RESIN, A PLURALITY OF THIN FLEXIBLE FLIMS OF MATERIAL NONADHERENT WITH RESPECT TO SAID RESIN RESPECTIVELY DISPOSED BETWEEN ADJACENT LAMINATES, SAID FILMS SUBSTANTIALLY COEXTENSIVE WITH SAID LAMINATES, AND MEANS FOR RETAINING SAID LAMINATES IN STACKED RELATIONSHIP.
Claim 2
Dependent Claim
54 words
A LAMINATED PROTECTICE SOLE INCLUDING IN COMBINATION A PLURALITY OF STACKED FIBROUS LAMINATES, SAID LAMINATES IMPREGNATED WITH SYNTHETIC RESIN, A PLURALITY OF THIN FLEXIBLE FLIMS OF MATERIAL NONADHERENT WITH RESPECT TO SAID RESIN RESPECTIVELY DISPOSED BETWEEN ADJACENT LAMINATES, SAID FILMS SUBSTANTIALLY COEXTENSIVE WITH SAID LAMINATES, AND MEANS FOR RETAINING SAID LAMINATES IN STACKED RELATIONSHIP.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |