Patent US2133016A successfully refreshed from Google Patents.
Patent US2695445A successfully refreshed from Google Patents.
US2695445A
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Method of screening frames by a continuous process using screening rolls
Assignee: Detroit Steel Products Co Inc
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Filing: 1950-07-20
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Granted: 1954-11-30
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Expires: 1970-07-20
Abstract
No abstract record available.
Inventors
- 👤 David G Johnson
- 👤 Mayer Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:02
CPC Classifications
B; B21; B21F; B21F33/00; B21F33/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/49798; Y10T29/49826; Y10T29/49828; Y10T29/49829; Y10T29/49831; Y10T29/49863; Y10T29/49867; Y10T29/49876; Y10T29/49908; Y10T29/49936; Y10T29/49945; Y10T29/51; Y10T29/5136; Y10T29/5137; Y10T29/5142; Y10T29/5191
Claims Analysis
Total Claims: 0
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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 |