Patent US3200540A successfully refreshed from Google Patents.
US3200540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for grinding compound-convex surfaces
Assignee: Lavalle & Ide Inc
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Filing: 1963-11-05
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Granted: 1965-08-17
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Expires: 1983-11-05
Abstract
No abstract record available.
Inventors
- 👤 Lavallee Joseph Aime
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:37
CPC Classifications
B; B24; B24B; B24B3/00; B24B3/18; B24B3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A DEVICE FOR SHARPENING REAMERS OR THE LIKE HAVING LONGITUDINAL BLADES, SAID DEVICE COMPRISING A ROTATABLE GRINDING WHEEL HAVING AN INTERNAL CONCAVELY CURVED GRINDING SURFACE, SAID GRINING SURFACE BEING GENERATED BY A SIMPLE CURVED LINE SWUNG ABOUT THE AXIS OF ROTATION OF SAID GRINDING WHEEL, AND A REAMER HOLDER FOR POSITIONING THE END FACES OF SUCCESSIVE BLADES OF SAID REAMER IN EN-
Claim 2
Independent Claim
62 words
A DEVICE FOR SHARPENING REAMERS OR THE LIKE HAVING LONGITUDINAL BLADES, SAID DEVICE COMPRISING A ROTATABLE GRINDING WHEEL HAVING AN INTERNAL CONCAVELY CURVED GRINDING SURFACE, SAID GRINING SURFACE BEING GENERATED BY A SIMPLE CURVED LINE SWUNG ABOUT THE AXIS OF ROTATION OF SAID GRINDING WHEEL, AND A REAMER HOLDER FOR POSITIONING THE END FACES OF SUCCESSIVE BLADES OF SAID REAMER IN EN-
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |