US2476146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing skid-resistant treads
Assignee: Paul E Hawkinson Co
•
Filing: 1947-10-17
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Granted: 1949-07-12
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Expires: 1967-10-17
Abstract
No abstract record available.
Inventors
- 👤 Paul E Hawkinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:12
CPC Classifications
B; B60; B60C; B60C11/00; B60C11/14; B60C11/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21956E
Cited
US1216654A
Cited
US1778183A
Cited
US2110293A
Cited
US2237819A
Cited
US2396059A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-11 | 1953-01-10 | 1953-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-11 | 1957-01-10 | 1957-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-11 | 1961-01-10 | 1961-07-12 | $7700.00 | Window Closed / Lapsed |