Patent US2933281A successfully refreshed from Google Patents.
US2933281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for supplying a desired weight of material to a receiving receptacle
Assignee: Proctor and Schwartz Inc
•
Filing: 1955-04-01
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Granted: 1960-04-19
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Expires: 1975-04-01
Abstract
No abstract record available.
Inventors
- 👤 Edward M Hyde
- 👤 John W Powischill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:26
CPC Classifications
G; G01; G01G; G01G13/00; G01G13/02; D; D01; D01G; D01G23/00; D01G23/02; D01G23/04; D01G23/045
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE23830E
Cited
US964388A
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US1986268A
Cited
US1889663A
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US2047203A
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US2066763A
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US2098324A
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US2323023A
Cited
US2371040A
Cited
US2534801A
Cited
US2597831A
Cited
US2729213A
Cited
US2581205A
Cited
US2702177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |