Patent US2547858A successfully refreshed from Google Patents.
US2547858A
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US
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Center
Assignee: Individual
•
Filing: 1945-11-17
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Granted: 1951-04-03
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Expires: 1965-11-17
Abstract
No abstract record available.
Inventors
- 👤 Howard K Dearborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:02
CPC Classifications
B; B23; B23B; B23B23/00; B23B23/04; B23B2260/00; B23B2260/008; B23B2260/0082; B23B2270/00; B23B2270/09; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2568
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US147106A
Cited
US1542827A
Cited
US1791392A
Cited
US1993809A
Cited
US2011273A
Cited
US2058322A
Cited
US2377594A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |