US2621445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for polishing continuous strip material
Assignee: Old Carco LLC
•
Filing: 1947-04-02
•
Granted: 1952-12-16
•
Expires: 1967-04-02
Abstract
No abstract record available.
Inventors
- 👤 David A Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:24
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/12; B24B7/13
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US78093A
Cited
US749961A
Cited
US67240A
Cited
US1207159A
Cited
US1069803A
Cited
US1031640A
Cited
US1152460A
Cited
DE483601C
Cited
US1375129A
Cited
US1610419A
Cited
US1773992A
Cited
US1724704A
Cited
FR627428A
Cited
US1900313A
Cited
US1671718A
Cited
US1895934A
Cited
US1962765A
Cited
US2023572A
Cited
US2092734A
Cited
US2195049A
Cited
US2200592A
Cited
US2195064A
Cited
US2171060A
Cited
US2257452A
Cited
US2238761A
Cited
US2269197A
Cited
US2288782A
Cited
US2312014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |