US3492178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blade sharpening solution and process
Assignee: WAYNE A WESTLING
•
Filing: 1966-09-08
•
Granted: 1970-01-27
•
Expires: 1986-09-08
Abstract
No abstract record available.
Inventors
- 👤 Wayne A Westling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:29
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/06; C23F1/10; C23F1/14; C23F1/16; C23F1/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2405101A
Cited
US2555214A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |