Patent US1423128A successfully refreshed from Google Patents.
US1423128A
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US
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Sand-blast apparatus
Assignee: Pangborn Corp
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Filing: 1920-12-08
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Granted: 1922-07-18
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Expires: 1940-12-08
Abstract
No abstract record available.
Inventors
- 👤 Hugo F Liedtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:10
CPC Classifications
B; B24; B24C; B24C3/00; B24C3/18; B24C3/20; B24C3/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1925-07-17 | 1926-01-16 | 1926-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-07-17 | 1930-01-16 | 1930-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-07-17 | 1934-01-16 | 1934-07-18 | $7700.00 | Window Closed / Lapsed |