Patent US4495380A successfully refreshed from Google Patents.
Patent US2695444A successfully refreshed from Google Patents.
US2695444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for screening frames by a continuous process using screening rolls
Assignee: Detroit Steel Products Co Inc
•
Filing: 1949-08-15
•
Granted: 1954-11-30
•
Expires: 1969-08-15
Abstract
No abstract record available.
Inventors
- 👤 David G Johnson
- 👤 Mayer Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:01
CPC Classifications
B; B21; B21F; B21F33/00; B21F33/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5142
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2362088A
Cited
US739343A
Cited
US783786A
Cited
US1493480A
Cited
US1426760A
Cited
US1487302A
Cited
US1556234A
Cited
US1665203A
Cited
US1734710A
Cited
US1714468A
Cited
US1832524A
Cited
US1934765A
Cited
US2200605A
Cited
US2158656A
Cited
US2343043A
Cited
US2142438A
Cited
US2108638A
Cited
US2144570A
Cited
US2190611A
Cited
US2346347A
Cited
US2364494A
Cited
US2371816A
Cited
US2435738A
Cited
US2422952A
Cited
US2458612A
Cited
US2638131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-29 | 1958-05-31 | 1958-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-29 | 1962-05-31 | 1962-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-29 | 1966-05-31 | 1966-11-30 | $7700.00 | Window Closed / Lapsed |