US2721691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bags with multiply walls and method of manufacture
Assignee: Sydney-Thomas Corp
•
Filing: 1953-09-17
•
Granted: 1955-10-25
•
Expires: 1973-09-17
Abstract
No abstract record available.
Inventors
- 👤 Makrauer Irvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:18
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2033238A
Cited
US2043782A
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US2282258A
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US2301128A
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US2344369A
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US2584722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-24 | 1959-04-25 | 1959-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-24 | 1963-04-25 | 1963-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-24 | 1967-04-25 | 1967-10-25 | $7700.00 | Window Closed / Lapsed |