US2818003A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making a multi-ply valve bag having an extended intermediate valve ply
Assignee: ST Regis Paper Co
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Filing: 1953-09-03
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Granted: 1957-12-31
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Expires: 1973-09-03
Abstract
No abstract record available.
Inventors
- 👤 Browning Randolph Mckim
- 👤 Harry E Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:01
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/84; B31B2155/00; B31B2160/00; B31B2160/10; B31B2170/00; B31B2170/20; B31B70/85
Claims Analysis
Total Claims: 0
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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) | 1960-12-30 | 1961-07-01 | 1961-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-30 | 1965-07-01 | 1965-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-30 | 1969-07-01 | 1969-12-31 | $7700.00 | Window Closed / Lapsed |