US3030488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing tubes with a helical welding seam
Assignee: WILLY H SCHLIEKER KG
•
Filing: 1959-02-04
•
Granted: 1962-04-17
•
Expires: 1979-02-04
Abstract
No abstract record available.
Inventors
- 👤 Kuckens Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:55
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/12; B21C37/122; B23; B23K; B23K9/00; B23K9/02; B23K9/032; B23K9/0325; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49391
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1795380A
Cited
US1793381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |