Patent US2946357A successfully refreshed from Google Patents.
US2946357A
Expired / Lapsed
US
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Apparatus and method for packing pulverulent material
Assignee: PPG Industries Inc
•
Filing: 1958-03-03
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Granted: 1960-07-26
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Expires: 1978-03-03
Abstract
No abstract record available.
Inventors
- 👤 Albert C Hobbie
- 👤 Joseph W Holdcraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:09
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/20; B65B1/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US225028A
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US924240A
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US2630248A
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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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |