Patent US2831615A successfully refreshed from Google Patents.
US2831615A
Expired / Lapsed
US
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Dispensing device for plastic materials
Assignee: Individual
•
Filing: 1954-08-24
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Granted: 1958-04-22
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Expires: 1974-08-24
Abstract
No abstract record available.
Inventors
- 👤 William A Sherbondy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:15
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00503; B05C17/00506; B05C17/00516; B05C17/00596; G; G01; G01F; G01F11/00; G01F11/02; G01F11/021; G01F11/025; G01F11/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1938479A
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US2105370A
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US2240329A
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US2517796A
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US2690181A
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US2754033A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |