US3224677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vaporizing apparatus
Assignee: KELROY CORP
•
Filing: 1964-09-14
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Granted: 1965-12-21
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Expires: 1984-09-14
Abstract
No abstract record available.
Inventors
- 👤 Roy A Schmidt
- 👤 George A P Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:53
CPC Classifications
B; B05; B05B; B05B12/00; B05B12/02; B05B12/06; B05B1/00; B05B1/30; B05B1/3033; B05B1/304; B05B1/3046; B05B1/3053
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |