Patent US2421908A successfully refreshed from Google Patents.
US2421908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of cops in ring spinning and ring doubling machines
Assignee: Joh Jacob Rieter und Cie AG
•
Filing: 1945-06-08
•
Granted: 1947-06-10
•
Expires: 1965-06-08
Abstract
No abstract record available.
Inventors
- 👤 Preysch Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:32
CPC Classifications
D; D01; D01H; D01H1/00; D01H1/02; B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US10851A
Cited
US244548A
Cited
DE591383C
Cited
US1793704A
Cited
FR738650A
Cited
FR760942A
Cited
US2043607A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |