US1459797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer for internal-combustion engines
Assignee: Individual
•
Filing: 1921-08-16
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Granted: 1923-06-26
•
Expires: 1941-08-16
Abstract
No abstract record available.
Inventors
- 👤 Parolini Cesare
- 👤 Perron Gustave
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:58
CPC Classifications
F; F01; F01N; F01N13/00; F01N1/00; F01N1/08; F01N1/089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1926-06-25 | 1926-12-25 | 1927-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-06-25 | 1930-12-25 | 1931-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-06-25 | 1934-12-25 | 1935-06-26 | $7700.00 | Window Closed / Lapsed |