Patent US2569964A successfully refreshed from Google Patents.
US2569964A
Expired / Lapsed
US
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Duplex bag and process of making same
Assignee: Individual
•
Filing: 1947-12-04
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Granted: 1951-10-02
•
Expires: 1967-12-04
Abstract
No abstract record available.
Inventors
- 👤 Harry F Waters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1973391A
Cited
US2133946A
Cited
US2152323A
Cited
US2151202A
Cited
US2347439A
Cited
US2246911A
Cited
US2353746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |