US3534901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag construction
Assignee: Dow Chemical Co
•
Filing: 1968-12-09
•
Granted: 1970-10-20
•
Expires: 1988-12-09
Abstract
No abstract record available.
Inventors
- 👤 John P Repko
- 👤 Gerard T Burroughs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/812; B31B70/8123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2819010A
Cited
US3341108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |