US2531597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hammer and renewable tip for hammer mills
Assignee: KENSINGTON STEEL Co
•
Filing: 1948-09-02
•
Granted: 1950-11-28
•
Expires: 1968-09-02
Abstract
No abstract record available.
Inventors
- 👤 Edmund C Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:12
CPC Classifications
B; B02; B02C; B02C13/00; B02C13/26; B02C13/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1465987A
Cited
GB190328388A
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US1016979A
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US1170370A
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US1538831A
Cited
US1693058A
Cited
US1717759A
Cited
US1947784A
Cited
GB475430A
Cited
US2152332A
Cited
US2429157A
Cited
US2467865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |