US3473446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of paper or similar multi-ply bags,and bags obtained by the process
Assignee: Individual
•
Filing: 1967-03-24
•
Granted: 1969-10-21
•
Expires: 1987-03-24
Abstract
No abstract record available.
Inventors
- 👤 Marius Berghgracht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:44
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/02; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/84; B31B70/855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2013086A
Cited
US2609734A
Cited
US2570047A
Cited
US2753768A
Cited
US2845214A
Cited
US2818003A
Cited
US3329070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-20 | 1973-04-21 | 1973-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-20 | 1977-04-21 | 1977-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-20 | 1981-04-21 | 1981-10-21 | $7700.00 | Window Closed / Lapsed |