Patent US2968474A successfully refreshed from Google Patents.
US2968474A
Expired / Lapsed
US
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Vaporizer
Assignee: Chemetron Corp
•
Filing: 1957-09-25
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Granted: 1961-01-17
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Expires: 1977-09-25
Abstract
No abstract record available.
Inventors
- 👤 Francis J Eichelman
- 👤 Norman C Graunke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:46
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18; Y; Y10; Y10S; Y10S261/00; Y10S261/65; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86743
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1011686A
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US1191700A
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US1286109A
Cited
US1910753A
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US2166574A
Cited
US2223456A
Cited
US2290783A
Cited
US2268172A
Cited
US2572199A
Cited
US2902269A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |