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US2601954A
Expired / Lapsed
US
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Spring means for roller mills and the like
Assignee: Combustion Engineering Inc
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Filing: 1949-11-17
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Granted: 1952-07-01
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Expires: 1969-11-17
Abstract
No abstract record available.
Inventors
- 👤 Crites Joe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:28
CPC Classifications
B; B02; B02C; B02C15/00; B02C15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1806980A
Cited
US964224A
Cited
US1943142A
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US2079155A
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US2192310A
Cited
US2342255A
Cited
US2431746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |