US3445175A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burners
Assignee: Individual
•
Filing: 1967-02-28
•
Granted: 1969-05-20
•
Expires: 1987-02-28
Abstract
No abstract record available.
Inventors
- 👤 Kurt Krieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:31
CPC Classifications
F; F27; F27D; F27D99/00; F27D99/0001; F27D99/0033; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145; F23D14/151; F23D2900/00; F23D2900/00003; F23D2900/00012
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US493801A
Cited
US1313196A
Cited
US1320075A
Cited
US1939240A
Cited
FR1241828A
Cited
US3199573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-05-19 | 1972-11-18 | 1973-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-05-19 | 1976-11-18 | 1977-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-05-19 | 1980-11-18 | 1981-05-20 | $7700.00 | Window Closed / Lapsed |