US2554568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay digger
Assignee: Independent Pneumatic Tool Co
•
Filing: 1946-07-17
•
Granted: 1951-05-29
•
Expires: 1966-07-17
Abstract
No abstract record available.
Inventors
- 👤 Hilmer A Gillerstrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:44
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/24; B25D17/20; B25D17/22
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US835290A
Cited
US871756A
Cited
US1109782A
Cited
US1084152A
Cited
US1223027A
Cited
US1641357A
Cited
US1889422A
Cited
US2019332A
Cited
US2102576A
Cited
US2201485A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |