US2858853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust pipe extension
Assignee: Individual
•
Filing: 1953-12-31
•
Granted: 1958-11-04
•
Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Lyon George Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:42
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US107603A
Cited
US457803A
Cited
US1069335A
Cited
US2097041A
Cited
US2313772A
Cited
GB568140A
Cited
US2664700A
Cited
US2635642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |