US2839877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping machine
Assignee: Crane Packing Co
•
Filing: 1954-03-29
•
Granted: 1958-06-24
•
Expires: 1974-03-29
Abstract
No abstract record available.
Inventors
- 👤 Stephen A Boettcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:22
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/10; B24B37/102
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US765105A
Cited
US1262529A
Cited
US1619344A
Cited
US2136036A
Cited
US2019171A
Cited
US2634558A
Cited
US2627144A
Cited
US2688215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-23 | 1961-12-23 | 1962-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-23 | 1965-12-23 | 1966-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-23 | 1969-12-23 | 1970-06-24 | $7700.00 | Window Closed / Lapsed |