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US2820624A
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Assignee: Harnischfeger Corp
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Filing: 1955-09-26
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Granted: 1958-01-21
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Expires: 1975-09-26
Abstract
No abstract record available.
Inventors
- 👤 Herman L Koegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:22
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/14; G01G19/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1111560A
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US1214745A
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US1424888A
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US1934201A
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US2061863A
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US2298216A
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US2304402A
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US2645120A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |