US2957284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging mechanism
Assignee: Bartelt Engineering Co
•
Filing: 1957-11-12
•
Granted: 1960-10-25
•
Expires: 1977-11-12
Abstract
No abstract record available.
Inventors
- 👤 Charles B Harker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:55
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/30; B65B1/36; B65B1/363; B65B55/00; B65B55/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1058865A
Cited
US1091568A
Cited
US2243058A
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US2256939A
Cited
US2379655A
Cited
US2446762A
Cited
US2775084A
Cited
US2720737A
Cited
US2611938A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |