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Patent US2762273A successfully refreshed from Google Patents.
US2762273A
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Folding and guiding mechanism for double wall bag machines
Assignee: Bartelt Engineering Co
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Filing: 1952-11-26
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Granted: 1956-09-11
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Expires: 1972-11-26
Abstract
No abstract record available.
Inventors
- 👤 Charles B Harker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:16
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B2155/00; B31B2160/00; B31B2160/10; B31B2170/00; B31B2170/20
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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |