US3517485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for treating gases
Assignee: Alco Industries Inc
•
Filing: 1968-01-04
•
Granted: 1970-06-30
•
Expires: 1988-01-04
Abstract
No abstract record available.
Inventors
- 👤 David E Dell Agnese
- 👤 Townsend Tinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:53
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
AT16113B
Cited
US1637597A
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US2046500A
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US2075344A
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US2060166A
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US2585205A
Cited
US2716509A
Cited
US3182977A
Cited
US3116348A
Cited
FR1361725A
Cited
US3369344A
Cited
US3406953A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-29 | 1973-12-29 | 1974-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-29 | 1977-12-29 | 1978-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-29 | 1981-12-29 | 1982-06-30 | $7700.00 | Window Closed / Lapsed |