Patent US2742867A successfully refreshed from Google Patents.
US2742867A
Expired / Lapsed
US
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Flour duster
Assignee: Read Standard Corp
•
Filing: 1953-05-13
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Granted: 1956-04-24
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Expires: 1973-05-13
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Rhodes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:38
CPC Classifications
A; A21; A21C; A21C9/00; A21C9/04; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1642519A
Cited
US1620559A
Cited
US1970336A
Cited
US2066899A
Cited
US2142373A
Cited
US2633242A
Cited
US2579514A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |