US2216519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making tubing
Assignee: Bundy Tubing Co
•
Filing: 1938-01-03
•
Granted: 1940-10-01
•
Expires: 1958-01-03
Abstract
No abstract record available.
Inventors
- 👤 Bert L Quarnstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/08; C; C23; C23C; C23C2/00; C23C2/003; C23C2/0036; C23C2/34; C23C2/36; C23C2/38; Y; Y10; Y10S; Y10S118/00; Y10S118/11; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
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) | 1943-10-01 | 1944-04-01 | 1944-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-01 | 1948-04-01 | 1948-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-01 | 1952-04-01 | 1952-10-01 | $7700.00 | Window Closed / Lapsed |