US2718239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety arrangement for pressure vessels
Assignee: Weston Electric Instrument Corp
•
Filing: 1952-07-08
•
Granted: 1955-09-20
•
Expires: 1972-07-08
Abstract
No abstract record available.
Inventors
- 👤 Paul F K Erbguth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:38
CPC Classifications
B; B29; B29C; B29C35/00; B29C35/02; B29C35/0227; B29C35/0233; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86292; Y10T137/863; Y10T137/86308; Y10T137/86316; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1021
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US913700A
Cited
US1503971A
Cited
US1545990A
Cited
US1555174A
Cited
US2189653A
Cited
US2358344A
Cited
US2593046A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-19 | 1959-03-21 | 1959-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-19 | 1963-03-21 | 1963-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-19 | 1967-03-21 | 1967-09-20 | $7700.00 | Window Closed / Lapsed |