US2870830A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burners
Assignee: American Infra Red Radiant Co Inc
•
Filing: 1954-10-28
•
Granted: 1959-01-27
•
Expires: 1974-10-28
Abstract
No abstract record available.
Inventors
- 👤 Treu Rheinisch-Westfa Revision
- 👤 Franken Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:45
CPC Classifications
F; F23; F23C; F23C99/00; F23C2700/00; F23C2700/04; F23C2700/043
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1170509A
Cited
US1259029A
Cited
US1365816A
Cited
US1451072A
Cited
US1677156A
Cited
US1916572A
Cited
FR766973A
Cited
US2533104A
Cited
US2577772A
Cited
FR1076630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-26 | 1962-07-28 | 1963-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-26 | 1966-07-28 | 1967-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-26 | 1970-07-28 | 1971-01-27 | $7700.00 | Window Closed / Lapsed |