US2911035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymix gas burner
Assignee: Bethlehem Apparatus Co Inc
•
Filing: 1956-12-05
•
Granted: 1959-11-03
•
Expires: 1976-12-05
Abstract
No abstract record available.
Inventors
- 👤 Chauncy W Nieman
- 👤 James B Lawrence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:28
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/72; F23D14/82; F23D2900/00; F23D2900/00012
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US405528A
Cited
US1729677A
Cited
US856366A
Cited
US904243A
Cited
US1029691A
Cited
US1420182A
Cited
US1710841A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |