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US2850321A
Expired / Lapsed
US
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Vaporizing devices
Assignee: Individual
•
Filing: 1956-07-05
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Granted: 1958-09-02
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Expires: 1976-07-05
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:50
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US366693A
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US446953A
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US1129897A
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US1358928A
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US1479704A
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FR625681A
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US1763678A
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US2412326A
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US2545323A
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US2711346A
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US2685119A
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US2738224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-01 | 1962-03-03 | 1962-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-01 | 1966-03-03 | 1966-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-01 | 1970-03-03 | 1970-09-02 | $7700.00 | Window Closed / Lapsed |