Patent US2587463A successfully refreshed from Google Patents.
US2587463A
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US
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Tamping roller frame
Assignee: Wm Bros Boiler & Manufacturing Co
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Filing: 1946-06-22
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Granted: 1952-02-26
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Expires: 1966-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ulyss O Guignard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:03
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/026; A; A01; A01B; A01B29/00; A01B29/04; A01B29/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US642327A
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US1187251A
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US1497781A
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US1754497A
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US1764944A
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US1983860A
Cited
US2076958A
Cited
US2245865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |