US2998098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas cleaning apparatus
Assignee: Honeywell Inc
•
Filing: 1958-11-17
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Granted: 1961-08-29
•
Expires: 1978-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Preston E Mcnall
- 👤 Asbjorn M Severson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:24
CPC Classifications
B; B03; B03C; B03C3/00; B03C3/34; B03C3/74; B03C3/78; B05; B05B; B05B3/00; B05B3/02; B05B3/04; B05B3/06; B05B3/10; B05B3/1007; B05B3/1021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US540218A
Cited
US1098389A
Cited
US1189593A
Cited
US1399441A
Cited
US1650292A
Cited
US1977882A
Cited
US2414528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-28 | 1965-02-27 | 1965-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-28 | 1969-02-27 | 1969-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-28 | 1973-02-27 | 1973-08-29 | $7700.00 | Window Closed / Lapsed |