Patent US2697328A successfully refreshed from Google Patents.
US2697328A
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US
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System for controlling gas temperatures
Assignee: Individual
•
Filing: 1950-10-06
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Granted: 1954-12-21
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Expires: 1970-10-06
Abstract
No abstract record available.
Inventors
- 👤 Ii Leighton Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:30
CPC Classifications
F; F02; F02C; F02C9/00; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1810059A
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US1871287A
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US2167590A
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US2306953A
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US2219994A
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US2414322A
Cited
US2421713A
Cited
US2405888A
Cited
GB605093A
Cited
US2508260A
Cited
US2606420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-20 | 1958-06-21 | 1958-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-20 | 1962-06-21 | 1962-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-20 | 1966-06-21 | 1966-12-21 | $7700.00 | Window Closed / Lapsed |