US3495385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air pollution control device
Assignee: Individual
•
Filing: 1967-08-21
•
Granted: 1970-02-17
•
Expires: 1987-08-21
Abstract
No abstract record available.
Inventors
- 👤 Adolph C Glass
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:19
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; F01N3/037; F01N3/05; F01N2270/00; F01N2270/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1421432A
Cited
US1661980A
Cited
US1791912A
Cited
GB382438A
Cited
US2024834A
Cited
US2740491A
Cited
US2787119A
Cited
US3139331A
Cited
US3253400A
Cited
US3353335A
Cited
US3372540A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-16 | 1973-08-18 | 1974-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-16 | 1977-08-18 | 1978-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-16 | 1981-08-18 | 1982-02-17 | $7700.00 | Window Closed / Lapsed |