US2701608A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner
Assignee: Thermal Research and Engineering Corp
•
Filing: 1951-02-03
•
Granted: 1955-02-08
•
Expires: 1971-02-03
Abstract
No abstract record available.
Inventors
- 👤 John A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
F; F23; F23C; F23C99/00; F23C2700/00; F23C2700/02; F23C2700/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1023422A
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US1591891A
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US1684079A
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US1614359A
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GB371056A
Cited
GB401868A
Cited
US2362972A
Cited
US2333531A
Cited
US2401836A
Cited
US2424765A
Cited
US2402971A
Cited
US2433618A
Cited
US2518364A
Cited
US2532740A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |