Patent US4171873A successfully refreshed from Google Patents.
US3148723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for improving the mixing of fuel gas with flux
Assignee: Individual
•
Filing: 1962-03-19
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Granted: 1964-09-15
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas J Farquhar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:55
CPC Classifications
F; F17; F17B; F17B1/00; F17B1/02; F17B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN A SYSTEM FOR ADDING FLUX TO A FUEL GAS FOR USE IN A TORCH OR THE LIKE, MEANS FOR HEATING A MIXTURE OF THE GAS AND FLUX AND A TRAP CONNECTED TO SAID MEANS FOR HEATING THE MIXTURE, SAID TRAP BEING LOCATED BETWEEN THE MEANS FOR HEATING THE MIXTURE AND THE TORCH TO CONDENSE AND TRAP ANY MOISTURE IN THE HEATED MIXTURE OF GAS AND FLUX.
Claim 2
Dependent Claim
67 words
IN A SYSTEM FOR ADDING FLUX TO A FUEL GAS FOR USE IN A TORCH OR THE LIKE, MEANS FOR HEATING A MIXTURE OF THE GAS AND FLUX AND A TRAP CONNECTED TO SAID MEANS FOR HEATING THE MIXTURE, SAID TRAP BEING LOCATED BETWEEN THE MEANS FOR HEATING THE MIXTURE AND THE TORCH TO CONDENSE AND TRAP ANY MOISTURE IN THE HEATED MIXTURE OF GAS AND FLUX.
References Cited (Backward Citations)
US2211448A
Cited
US2719580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |