Patent US2980414A successfully refreshed from Google Patents.
US2980414A
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Assignee: Cherry Burrell Corp
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Filing: 1956-03-16
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Granted: 1961-04-18
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Expires: 1976-03-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Joseph A Perry
- 👤 William M Haselton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:43
CPC Classifications
G; G01; G01G; G01G5/00; G01G11/00; G01G3/00; G01G3/12; G01G3/14; G01G3/1402
Claims Analysis
Total Claims: 0
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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) | 1964-04-17 | 1964-10-17 | 1965-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-17 | 1968-10-17 | 1969-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-17 | 1972-10-17 | 1973-04-18 | $7700.00 | Window Closed / Lapsed |