Patent US3020385A successfully refreshed from Google Patents.
US3020385A
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US
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Vaporizer
Assignee: Hankscraft Co
•
Filing: 1959-12-09
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Granted: 1962-02-06
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Expires: 1979-12-09
Abstract
No abstract record available.
Inventors
- 👤 Conlin Peter
- 👤 William L Schulz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:33
CPC Classifications
A; A61; A61M; A61M11/00; A61M11/04; A61M11/041; A61M11/042; A61M11/044
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
BE547940A
Cited
US1944348A
Cited
US1985623A
Cited
US2213851A
Cited
US2606275A
Cited
US2783355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-05 | 1965-08-07 | 1966-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-05 | 1969-08-07 | 1970-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-05 | 1973-08-07 | 1974-02-06 | $7700.00 | Window Closed / Lapsed |