Patent US2725050A successfully refreshed from Google Patents.
US2725050A
Expired / Lapsed
US
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Grinding wheel dressers
Assignee: Airborne Accessories Corp
•
Filing: 1951-10-18
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Granted: 1955-11-29
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Expires: 1971-10-18
Abstract
No abstract record available.
Inventors
- 👤 Jakobsen Harry Strand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:53
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/06; B24B53/08; B24B53/081
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1323486A
Cited
US1686802A
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US1855343A
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GB475096A
Cited
US2154938A
Cited
US2308317A
Cited
US2538532A
Cited
US2618255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-28 | 1959-05-30 | 1959-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-28 | 1963-05-30 | 1963-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-28 | 1967-05-30 | 1967-11-29 | $7700.00 | Window Closed / Lapsed |