Patent US2637890A successfully refreshed from Google Patents.
US2637890A
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Method of making metallic and clay articles
Assignee: Stark Ceramics Inc
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Filing: 1950-09-11
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Granted: 1953-05-12
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Expires: 1970-09-11
Abstract
No abstract record available.
Inventors
- 👤 William S Ramsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:42
CPC Classifications
B; B28; B28B; B28B23/00; B28B23/0081; B28B1/00; B28B1/52; B28B1/523; B28B11/00; B28B11/003; B28B11/24; B28B3/00; B28B3/20; C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220715A
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US906173A
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US950954A
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US1588473A
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US1802776A
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US1826454A
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US2116400A
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US2364108A
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US2472206A
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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) | 1956-05-11 | 1956-11-10 | 1957-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-05-11 | 1960-11-10 | 1961-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-05-11 | 1964-11-10 | 1965-05-12 | $7700.00 | Window Closed / Lapsed |