US2331969A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for producing tubular bodies
Assignee: Individual
•
Filing: 1940-11-07
•
Granted: 1943-10-19
•
Expires: 1960-11-07
Abstract
No abstract record available.
Inventors
- 👤 Friedrichs Werner
- 👤 Geffcken Heinrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:34
CPC Classifications
D; D01; D01H; D01H7/00; D01H7/02; D01H7/04; D01H7/16; B; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60; B29C53/607; B31; B31C; B31C3/00; B29C33/00; B29C33/76
Claims Analysis
Total Claims: 0
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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) | 1946-10-18 | 1947-04-19 | 1947-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-10-18 | 1951-04-19 | 1951-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-10-18 | 1955-04-19 | 1955-10-19 | $7700.00 | Window Closed / Lapsed |