Patent US2693205A successfully refreshed from Google Patents.
US2693205A
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Apparatus for constructing screening elements
Assignee: Southwestern Engineering Co
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Filing: 1950-09-19
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Granted: 1954-11-02
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Expires: 1970-09-19
Abstract
No abstract record available.
Inventors
- 👤 Clarence D Coulter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:46
CPC Classifications
B; B07; B07B; B07B1/00; B07B1/46; B07B1/48
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US406119A
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US1275929A
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US1542086A
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US1759165A
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US1947794A
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US2194551A
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US2216880A
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US2342025A
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US2396161A
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US2451360A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |