US3526998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding wheel guard for abrading machines
Assignee: Warner and Swasey Co
•
Filing: 1969-06-24
•
Granted: 1970-09-08
•
Expires: 1989-06-24
Abstract
No abstract record available.
Inventors
- 👤 William R Backer
- 👤 Richard A Dahlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:43
CPC Classifications
B; B24; B24B; B24B55/00; B24B55/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-07 | 1974-03-09 | 1974-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-07 | 1978-03-09 | 1978-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-07 | 1982-03-09 | 1982-09-08 | $7700.00 | Window Closed / Lapsed |