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Patent US3000454A successfully refreshed from Google Patents.
US3000454A
Expired / Lapsed
US
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Material weighing and bag filling machine
Assignee: Bemis Brothers Bag Co
•
Filing: 1957-02-14
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Granted: 1961-09-19
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Expires: 1977-02-14
Abstract
No abstract record available.
Inventors
- 👤 Frank L Hopkins
- 👤 Jack D Helm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:14
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/32; G; G01; G01G; G01G13/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2058775A
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US2097522A
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US2406934A
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US2455433A
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US2443350A
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US2564544A
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US2576411A
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US2790619A
Cited
US2805834A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |