US2456889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizer
Assignee: Phillips Petroleum Co
•
Filing: 1945-06-09
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Granted: 1948-12-21
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Expires: 1965-06-09
Abstract
No abstract record available.
Inventors
- 👤 Andrew R Olson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:32
CPC Classifications
F; F17; F17C; F17C13/00; F17C13/02; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0326; F17C2205/0338; F17C2221/00; F17C2221/03; F17C2221/032; F17C2221/035; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/03; F17C2223/033; F17C2225/00; F17C2225/01; F17C2225/0107; F17C2225/0123; F17C2227/00; F17C2227/03; F17C2227/0302; F17C2227/0304; F17C2227/0306; F17C2227/0332; F17C2227/0367; F17C2227/0369; F17C2227/0374; F17C2227/0388; F17C2227/0393; F17C2250/00; F17C2250/01; F17C2250/04; F17C2250/0404; F17C2250/0439; F17C2250/06; F17C2250/0605; F17C2250/0626; F17C2260/00; F17C2260/02; F17C2260/021; F17C2260/023; F17C2260/04; F17C2260/042; F17C2265/00; F17C2265/01; F17C2265/015; F17C2265/017
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1298254A
Cited
US1237858A
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US2244659A
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US2234407A
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US2341380A
Cited
US2346112A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-21 | 1952-06-21 | 1952-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-21 | 1956-06-21 | 1956-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-21 | 1960-06-21 | 1960-12-21 | $7700.00 | Window Closed / Lapsed |