US2553688A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tool attachment
Assignee: Individual
•
Filing: 1947-06-13
•
Granted: 1951-05-22
•
Expires: 1967-06-13
Abstract
No abstract record available.
Inventors
- 👤 Howard O Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:40
CPC Classifications
B; B24; B24B; B24B41/00; B24B41/04; B24B41/047; B24B23/00; B24B23/02; B24B23/028
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US689464A
Cited
US1391221A
Cited
US1575953A
Cited
US1840108A
Cited
US1785065A
Cited
US2101305A
Cited
US2240755A
Cited
US2365232A
Cited
US2465309A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-21 | 1954-11-20 | 1955-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-21 | 1958-11-20 | 1959-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-21 | 1962-11-20 | 1963-05-22 | $7700.00 | Window Closed / Lapsed |