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US2594693A
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Hollow circular article and method of making same
Assignee: Sharples Corp
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Filing: 1948-12-07
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Granted: 1952-04-29
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Expires: 1968-12-07
Abstract
No abstract record available.
Inventors
- 👤 Frederick H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:46
CPC Classifications
C; C04; C04B; C04B26/00; C04B26/02; B; B04; B04B; B04B7/00; B04B7/08; B04B7/085; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/585; B29C53/80; B29C53/8008; B29C53/805; D; D01; D01D; D01D7/00; D01D7/02; C04B2111/00; C04B2111/00474; C04B2111/00612; Y; Y10; Y10S; Y10S220/00; Y10S220/23; Y10S273/00; Y10S273/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2372983A
Cited
US2467999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-29 | 1955-10-29 | 1956-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-29 | 1959-10-29 | 1960-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-29 | 1963-10-29 | 1964-04-29 | $7700.00 | Window Closed / Lapsed |