Patent US2770425A successfully refreshed from Google Patents.
US2770425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spool and mandrel assembly
Assignee: CONTINENTAL STEEL Corp
•
Filing: 1954-09-28
•
Granted: 1956-11-13
•
Expires: 1974-09-28
Abstract
No abstract record available.
Inventors
- 👤 Lee Glenn Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:48
CPC Classifications
B; B65; B65H; B65H54/00; B65H54/02; B65H54/40; B65H54/54; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/245; B65H2701/00; B65H2701/50; B65H2701/51; B65H2701/511; B65H2701/5114; B65H2701/513; B65H2701/5134
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US335749A
Cited
US1075461A
Cited
US1266379A
Cited
US2224001A
Cited
US2341957A
Cited
US2548390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |