Patent US2943781A successfully refreshed from Google Patents.
US2943781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiwall bag tear strips
Assignee: ST Regis Paper Co
•
Filing: 1956-05-01
•
Granted: 1960-07-05
•
Expires: 1976-05-01
Abstract
No abstract record available.
Inventors
- 👤 John J Goodrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:54
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/66; B65D75/68; B31; B31B; B31B50/00; B31B50/74; B31B50/81; B31B50/812; B31B50/8125; B31B50/8126
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1633296A
Cited
CA516253A
Cited
US1133253A
Cited
US1903666A
Cited
US2322594A
Cited
US2306335A
Cited
US2467875A
Cited
US2679349A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-05 | 1964-01-04 | 1964-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-05 | 1968-01-04 | 1968-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-05 | 1972-01-04 | 1972-07-05 | $7700.00 | Window Closed / Lapsed |