Patent US2186286A successfully refreshed from Google Patents.
Patent US2116971A successfully refreshed from Google Patents.
US2116971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube forming machine
Assignee: Superior Tube Co
•
Filing: 1936-10-16
•
Granted: 1938-05-10
•
Expires: 1956-10-16
Abstract
No abstract record available.
Inventors
- 👤 Haslauer Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:01
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/10; B21C37/108
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) | 1941-05-09 | 1941-11-08 | 1942-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-05-09 | 1945-11-08 | 1946-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-05-09 | 1949-11-08 | 1950-05-10 | $7700.00 | Window Closed / Lapsed |