Patent EP0649637A1 successfully refreshed from Google Patents.
US1657577A
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Guide for bag-valving apparatus
Assignee: BATES VALVE BAG Co
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Filing: 1926-12-08
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Granted: 1928-01-31
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Expires: 1946-12-08
Abstract
No abstract record available.
Inventors
- 👤 Carl G Kronmiller
- 👤 John E Cornell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:35
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B70/84; B31B70/855; B31B2160/00; B31B2160/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1931-01-30 | 1931-08-01 | 1932-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1935-01-30 | 1935-08-01 | 1936-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1939-01-30 | 1939-08-01 | 1940-01-31 | $7700.00 | Window Closed / Lapsed |