US2521541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas purifying burner
Assignee: Schneible Co
•
Filing: 1945-05-18
•
Granted: 1950-09-05
•
Expires: 1965-05-18
Abstract
No abstract record available.
Inventors
- 👤 Claude B Schneible
- 👤 Clarence C Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:40
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01D53/00; B01D53/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1612915A
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US997548A
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US1013147A
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US1081227A
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US1273402A
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US1411719A
Cited
US1779282A
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US1933997A
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US1976629A
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US2029580A
Cited
US2197595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |