Patent US1431471A successfully refreshed from Google Patents.
US1431471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making rubber acid-proof containers
Assignee: Miller Rubber Co
•
Filing: 1921-09-23
•
Granted: 1922-10-10
•
Expires: 1941-09-23
Abstract
No abstract record available.
Inventors
- 👤 Lehr John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:17
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/006; B29K; B29K2021/00; B29L; B29L2031/00; B29L2031/712
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) | 1925-10-09 | 1926-04-10 | 1926-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-10-09 | 1930-04-10 | 1930-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-10-09 | 1934-04-10 | 1934-10-10 | $7700.00 | Window Closed / Lapsed |