US2421849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive blasting
Assignee: Pangborn Corp
•
Filing: 1945-03-13
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Granted: 1947-06-10
•
Expires: 1965-03-13
Abstract
No abstract record available.
Inventors
- 👤 Percy J Potter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:55
CPC Classifications
B; B24; B24C; B24C5/00; B24C5/08; B24C3/00; B24C3/08; B24C3/10; B24C3/12; Y; Y10; Y10T; Y10T29/00; Y10T29/45; Y10T29/4533
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-09 | 1950-12-09 | 1951-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-09 | 1954-12-09 | 1955-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-09 | 1958-12-09 | 1959-06-10 | $7700.00 | Window Closed / Lapsed |