US2829796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tight closing device for internal pressure vessels
Assignee: Individual
•
Filing: 1954-10-20
•
Granted: 1958-04-08
•
Expires: 1974-10-20
Abstract
No abstract record available.
Inventors
- 👤 Dieny Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:26
CPC Classifications
A; A47; A47J; A47J27/00; A47J27/08; A47J27/0804; Y; Y10; Y10S; Y10S251/00; Y10S251/90
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE104093C
Cited
US1499364A
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US1878677A
Cited
US2399115A
Cited
US2626560A
Cited
US2552642A
Cited
US2578389A
Cited
US2544854A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |