US3248041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiwall bag
Assignee: Howe Richardson Scale Co Inc
•
Filing: 1964-10-21
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Granted: 1966-04-26
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Expires: 1984-10-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:08
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/01; B65D31/00; B65D31/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A MULTIWALL BAG CONSTRUCTION CONSISTING ESSENTIALLY OF AN INNER AIR PERVIOUS SUBSTANCE CONTAINING LAYER, AN AIR IMPERVIOUS LAYER DISPOSED OUTWARDLY OF SAID INNER LAYER, AN AIR VENT LAYER DISPOSED INTERMEDIATE SAID OTHER TWO LAYERS, AND AN OUTER LAYER OF AIR PERVIOUS MATERIAL AROUND SAID AIR IMPERVIOUS LAYER.
Claim 2
Dependent Claim
47 words
A MULTIWALL BAG CONSTRUCTION CONSISTING ESSENTIALLY OF AN INNER AIR PERVIOUS SUBSTANCE CONTAINING LAYER, AN AIR IMPERVIOUS LAYER DISPOSED OUTWARDLY OF SAID INNER LAYER, AN AIR VENT LAYER DISPOSED INTERMEDIATE SAID OTHER TWO LAYERS, AND AN OUTER LAYER OF AIR PERVIOUS MATERIAL AROUND SAID AIR IMPERVIOUS LAYER.
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) | 1969-04-25 | 1969-10-25 | 1970-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-25 | 1973-10-25 | 1974-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-25 | 1977-10-25 | 1978-04-26 | $7700.00 | Window Closed / Lapsed |