US2967495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for combustion
Assignee: Shell USA Inc
•
Filing: 1958-09-22
•
Granted: 1961-01-10
•
Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Haan Simon De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:19
CPC Classifications
F; F23; F23B; F23B90/00; F23B1/00; F23B1/02; F23B1/04; F23B10/00; F23B50/00; F23B50/12; F23B7/00; F23B2700/00; F23B2700/011; F23B2700/023
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US426037A
Cited
US1306235A
Cited
US2380452A
Cited
US710707A
Cited
US1034218A
Cited
US1208082A
Cited
US1598894A
Cited
US1958265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |