Patent US3440829A successfully refreshed from Google Patents.
US3440829A
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Liquified gas delivery system
Assignee: LAB FOR ELECTRONICS Inc
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Filing: 1963-12-11
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Granted: 1969-04-29
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Expires: 1983-12-11
Abstract
No abstract record available.
Inventors
- 👤 William A Davies-White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:22
CPC Classifications
F; F17; F17C; F17C9/00; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/0119; F17C2203/00; F17C2203/03; F17C2203/06; F17C2203/0602; F17C2203/0612; F17C2203/0626; F17C2203/0629; F17C2205/00; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0335; F17C2223/00; F17C2223/01; F17C2223/0146; F17C2223/0153; F17C2223/04; F17C2223/042; F17C2223/046; F17C2223/047; F17C2250/00; F17C2250/06; F17C2250/0605; F17C2250/0636; F17C2270/00; F17C2270/05; F17C2270/0509
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3097498A
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US3097500A
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US2580710A
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US2580649A
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US2968163A
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US3081602A
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US3093974A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |