Patent US370221A successfully refreshed from Google Patents.
Patent US1963282A successfully refreshed from Google Patents.
Patent FR761484A successfully refreshed from Google Patents.
Patent US2984471A successfully refreshed from Google Patents.
US2984471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable crack router
Assignee: Individual
•
Filing: 1957-09-23
•
Granted: 1961-05-16
•
Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 John E Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:53
CPC Classifications
E; E01; E01C; E01C23/00; E01C23/06; E01C23/09; E01C23/0906; E01C23/0926; E01C23/0933; E01C23/094
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US44529A
Cited
US99139A
Cited
US180799A
Cited
US1059428A
Cited
GB193876A
Cited
US1949482A
Cited
US2569682A
Cited
US2568039A
Cited
US2581477A
Cited
US2664281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-15 | 1964-11-14 | 1965-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-15 | 1968-11-14 | 1969-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-15 | 1972-11-14 | 1973-05-16 | $7700.00 | Window Closed / Lapsed |