US2701624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cleaner
Assignee: Selas Corp of America
•
Filing: 1951-04-16
•
Granted: 1955-02-08
•
Expires: 1971-04-16
Abstract
No abstract record available.
Inventors
- 👤 Elvin L Krieble
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:20
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/22; B01D53/229; B01D50/00; B01D63/00; B01D63/06; B01D2253/00; B01D2253/10; B01D2253/102; B01D2257/00; B01D2257/70; B01D2257/80; B01D53/02; B01D53/04; B01D53/0407; B01D53/0415; B01D53/0446
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US808564A
Cited
US917619A
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US2195565A
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US2144681A
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US2207660A
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US2402140A
Cited
US2513556A
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US2541838A
Cited
US2521785A
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US2526782A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-02-07 | 1958-08-09 | 1959-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-07 | 1962-08-09 | 1963-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-07 | 1966-08-09 | 1967-02-08 | $7700.00 | Window Closed / Lapsed |