Patent US1479714A successfully refreshed from Google Patents.
US1479714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust muffler for motor cars
Assignee: Individual
•
Filing: 1921-11-21
•
Granted: 1924-01-01
•
Expires: 1941-11-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Herdle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/16; F01N1/165; F01N1/08; F01N1/14; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1926-12-31 | 1927-07-02 | 1928-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-31 | 1931-07-02 | 1932-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-31 | 1935-07-02 | 1936-01-01 | $7700.00 | Window Closed / Lapsed |