Patent US2997815A successfully refreshed from Google Patents.
US2997815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffing machine
Assignee: Lyon Inc
•
Filing: 1958-09-09
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Granted: 1961-08-29
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Expires: 1978-09-09
Abstract
No abstract record available.
Inventors
- 👤 Eldon J Guinn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:15
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/06; B24B19/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1385649A
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US1854610A
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US2314483A
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US2335625A
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US2370701A
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US2442624A
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US2592946A
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GB743384A
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FR1132836A
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US2819709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |