US2620121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for closing and sealing of valves in valve bags
Assignee: Billeruds AB
•
Filing: 1948-02-02
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Granted: 1952-12-02
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Expires: 1968-02-02
Abstract
No abstract record available.
Inventors
- 👤 Johnsson John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:49
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/14; B65D31/142; B65B; B65B1/00; B65B1/04; B65B1/18; B65B9/00; B65B9/10; B65B9/12; Y; Y10; Y10S; Y10S383/00; Y10S383/905
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1782738A
Cited
AU993527A
Cited
US1993377A
Cited
US2221854A
Cited
US2147970A
Cited
US2444891A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-02 | 1956-06-02 | 1956-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-02 | 1960-06-02 | 1960-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-02 | 1964-06-02 | 1964-12-02 | $7700.00 | Window Closed / Lapsed |