US2985920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a cored heel
Assignee: Seiberling Rubber Co
•
Filing: 1958-03-26
•
Granted: 1961-05-30
•
Expires: 1978-03-26
Abstract
No abstract record available.
Inventors
- 👤 John D Borroff
- 👤 Reynolds Coy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:10
CPC Classifications
B; B29; B29D; B29D35/00; B29D35/12; B29D35/124; B29C; B29C43/00; Y; Y10; Y10S; Y10S36/00; Y10S36/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1177833A
Cited
US1465775A
Cited
US1698791A
Cited
US1681217A
Cited
US1877298A
Cited
US1867132A
Cited
US2135570A
Cited
US2135335A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-29 | 1964-11-28 | 1965-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-29 | 1968-11-28 | 1969-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-29 | 1972-11-28 | 1973-05-30 | $7700.00 | Window Closed / Lapsed |