Patent US2969628A successfully refreshed from Google Patents.
US2969628A
Expired / Lapsed
US
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Charge control mechanism in infusion package manufacture
Assignee: National Tea Packing Co Inc
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Filing: 1957-05-22
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Granted: 1961-01-31
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Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Hans O Irmscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:02
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/36; B65B29/00; B65B29/02; B65B29/028
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |