US2628457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sandblasting device
Assignee: Individual
•
Filing: 1952-02-18
•
Granted: 1953-02-17
•
Expires: 1972-02-18
Abstract
No abstract record available.
Inventors
- 👤 Kroll George
- 👤 Handleman Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:42
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/02; B24C5/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US783218A
Cited
US1170198A
Cited
US1393562A
Cited
US1641342A
Cited
US2038249A
Cited
US2333264A
Cited
US2379432A
Cited
US2508874A
Cited
US2543517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-17 | 1956-08-18 | 1957-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-17 | 1960-08-18 | 1961-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-17 | 1964-08-18 | 1965-02-17 | $7700.00 | Window Closed / Lapsed |