US2707854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding wheel guard
Assignee: Individual
•
Filing: 1952-11-03
•
Granted: 1955-05-10
•
Expires: 1972-11-03
Abstract
No abstract record available.
Inventors
- 👤 Johnson John Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:35
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/04; B24B55/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US973894A
Cited
US1117660A
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US1134833A
Cited
US2077281A
Cited
US2097655A
Cited
US2354307A
Cited
US2374988A
Cited
US2510950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |