US2869294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping machine
Assignee: ABRADING SYSTEMS Co
•
Filing: 1957-07-02
•
Granted: 1959-01-20
•
Expires: 1977-07-02
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Boettcher
- 👤 Jack C Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:38
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/10; B24B37/102; B24B57/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US524572A
Cited
USRE23937E
Cited
US698126A
Cited
US1689950A
Cited
US1862135A
Cited
US2209071A
Cited
US2182952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |