Patent US1797183A successfully refreshed from Google Patents.
US1797183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soapstoning device
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1928-04-27
•
Granted: 1931-03-17
•
Expires: 1948-04-27
Abstract
No abstract record available.
Inventors
- 👤 Wetmore Laurence
- 👤 Herbert E Riggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:35
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29C37/0071
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1934-03-16 | 1934-09-15 | 1935-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-03-16 | 1938-09-15 | 1939-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-03-16 | 1942-09-15 | 1943-03-17 | $7700.00 | Window Closed / Lapsed |