Patent US3387793A successfully refreshed from Google Patents.
US3387793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and system for treating rubber
Assignee: French Oil Mill Machinery Co
•
Filing: 1965-11-04
•
Granted: 1968-06-11
•
Expires: 1985-11-04
Abstract
No abstract record available.
Inventors
- 👤 Jean M Burner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:13
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/06; B29K; B29K2021/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-06-11 | 1971-12-11 | 1972-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-11 | 1975-12-11 | 1976-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-11 | 1979-12-11 | 1980-06-11 | $7700.00 | Window Closed / Lapsed |