Patent US1887395A successfully refreshed from Google Patents.
US1887395A
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US
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Sand blast apparatus
Assignee: NEW HAVEN SAND BLAST Co
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Filing: 1930-05-29
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Granted: 1932-11-08
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Expires: 1950-05-29
Abstract
No abstract record available.
Inventors
- 👤 Clarence E Billings
- 👤 Donald S Sammis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:27
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) | 1935-11-08 | 1936-05-09 | 1936-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1939-11-08 | 1940-05-09 | 1940-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1943-11-08 | 1944-05-09 | 1944-11-08 | $7700.00 | Window Closed / Lapsed |