Patent US2767601A successfully refreshed from Google Patents.
US2767601A
Expired / Lapsed
US
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Counterbalance cylinder for forging presses and the like
Assignee: ERIE FOUNDRY CO
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Filing: 1953-06-15
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Granted: 1956-10-23
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Expires: 1973-06-15
Abstract
No abstract record available.
Inventors
- 👤 Macdonald S Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:05
CPC Classifications
B; B30; B30B; B30B15/00; B30B15/0064
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US498354A
Cited
GB189825113A
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GB261590A
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US1918354A
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US2169747A
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US2164640A
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US2412975A
Cited
US2512738A
Cited
US2636138A
Cited
US2650572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-23 | 1960-04-23 | 1960-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-23 | 1964-04-23 | 1964-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-23 | 1968-04-23 | 1968-10-23 | $7700.00 | Window Closed / Lapsed |