Patent US2428852A successfully refreshed from Google Patents.
US2428852A
Expired / Lapsed
US
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Sand blender
Assignee: Individual
•
Filing: 1943-12-18
•
Granted: 1947-10-14
•
Expires: 1963-12-18
Abstract
No abstract record available.
Inventors
- 👤 William P Muir
- 👤 Robert H Macinnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:56
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; Y; Y10; Y10S; Y10S241/00; Y10S241/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US163213A
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US356450A
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US404011A
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US788839A
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US810510A
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US874982A
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US1033713A
Cited
US1190950A
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US1675049A
Cited
US2168515A
Cited
US2228977A
Cited
GB528097A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-13 | 1951-04-14 | 1951-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-13 | 1955-04-14 | 1955-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-13 | 1959-04-14 | 1959-10-14 | $7700.00 | Window Closed / Lapsed |