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Patent US3378189A successfully refreshed from Google Patents.
US3378189A
Expired / Lapsed
US
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Plastic sack
Assignee: British Visqueen Ltd
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Filing: 1966-09-06
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Granted: 1968-04-16
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Expires: 1986-09-06
Abstract
No abstract record available.
Inventors
- 👤 Dickson Robert Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:59
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/01; B65D31/00; B65D31/08; B65D31/10; B65D31/14; B65D31/147
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) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |