Patent US2586673A successfully refreshed from Google Patents.
US2586673A
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US
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Manufacturing process
Assignee: Sheffield Corp
•
Filing: 1946-06-03
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Granted: 1952-02-19
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Expires: 1966-06-03
Abstract
No abstract record available.
Inventors
- 👤 Carl J Linxweiler
- 👤 Richard Y Moss
- 👤 Jacob T Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:36
CPC Classifications
B; B23; B23B; B23B29/00; B23B29/04; B23B29/12; B23B29/16; B24; B24D; B24D18/00; Y; Y10; Y10S; Y10S451/00; Y10S451/913
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |