US2938314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for evacuating air from bag body at time of filling
Assignee: Bemis Brothers Bag Co
•
Filing: 1957-10-28
•
Granted: 1960-05-31
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Frank L Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:25
CPC Classifications
B; B65; B65B; B65B1/00; B65B1/20; B65B1/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2328798A
Cited
US2634562A
Cited
US2612738A
Cited
US2689073A
Cited
US2697543A
Cited
US2831510A
Cited
US2815621A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |