Patent US2592371A successfully refreshed from Google Patents.
US2592371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve for compressed acetylene
Assignee: Standard Oil Development Co
•
Filing: 1946-11-14
•
Granted: 1952-04-08
•
Expires: 1966-11-14
Abstract
No abstract record available.
Inventors
- 👤 Archie M Ackroyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:38
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/10; F16K47/00; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86558; Y10T137/86566
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US251019A
Cited
US944026A
Cited
US1103931A
Cited
GB277100A
Cited
US2143565A
Cited
US2227661A
Cited
US2301428A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-04-08 | 1955-10-08 | 1956-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-04-08 | 1959-10-08 | 1960-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-04-08 | 1963-10-08 | 1964-04-08 | $7700.00 | Window Closed / Lapsed |