US2904958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spark and flame arrester
Assignee: Fluor Corp
•
Filing: 1956-10-19
•
Granted: 1959-09-22
•
Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Robert L Solnick
- 👤 Ray C Sollars
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:00
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/06; F01N3/02; F01N3/037; F01N3/05; F01N2230/00; F01N2230/06; F01N2290/00; F01N2290/02; F01N2290/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US917232A
Cited
US851494A
Cited
US862250A
Cited
US1032536A
Cited
US1244442A
Cited
US1465904A
Cited
US1525249A
Cited
US1421432A
Cited
FR572155A
Cited
US1751739A
Cited
US1716480A
Cited
US1877296A
Cited
US1794276A
Cited
US2112534A
Cited
US2197854A
Cited
US2659450A
Cited
US2673446A
Cited
US2708920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |