Patent US2570949A successfully refreshed from Google Patents.
US2570949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground-contacting surface for shoe soles
Assignee: A WERMAN AND SONS Inc
•
Filing: 1951-01-10
•
Granted: 1951-10-09
•
Expires: 1971-01-10
Abstract
No abstract record available.
Inventors
- 👤 Hoffenberg Isidor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:56
CPC Classifications
A; A43; A43B; A43B13/00; A43B13/14; A43B13/22; A43B13/223
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US306561A
Cited
US322224A
Cited
US485459A
Cited
DE613656C
Cited
GB191402617A
Cited
US1524782A
Cited
US1765155A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-08 | 1955-04-09 | 1955-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-08 | 1959-04-09 | 1959-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-08 | 1963-04-09 | 1963-10-09 | $7700.00 | Window Closed / Lapsed |