US3021892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner apparatus
Assignee: GEN THERMIQUE PROCEDES BROLA S
•
Filing: 1959-01-07
•
Granted: 1962-02-20
•
Expires: 1979-01-07
Abstract
No abstract record available.
Inventors
- 👤 Brola Gabriel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:42
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB288721A
Cited
US1784747A
Cited
US2005832A
Cited
US2200826A
Cited
US2429739A
Cited
US2620864A
Cited
US2507006A
Cited
US2597033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |