US3413804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for treating exhaust gases
Assignee: BERNHARD MAX SCHONGS
•
Filing: 1966-09-01
•
Granted: 1968-12-03
•
Expires: 1986-09-01
Abstract
No abstract record available.
Inventors
- 👤 Schongs Bernhard Max
- 👤 Lau Hans Waldemar
- 👤 Behrens Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:20
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/0205; B; B62; B62D; B62D49/00; B62D49/02; F01N3/05; F01N3/06; F01N2230/00; F01N2230/06; F01N2270/00; F01N2270/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |