US1818375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silencer
Assignee: Maxim Silencer Co
•
Filing: 1928-05-02
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Granted: 1931-08-11
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Expires: 1948-05-02
Abstract
No abstract record available.
Inventors
- 👤 Roland B Bourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:46
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/18; F01N13/1838; F01N13/1844; F01N1/00; F01N1/02; F01N1/08; F01N1/12; F01N13/1855; F01N13/1888; F01N13/1894; F01N2450/00; F01N2450/24; F01N2490/00; F01N2490/15; F01N2490/155; F01N2490/20
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) | 1934-08-10 | 1935-02-09 | 1935-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-08-10 | 1939-02-09 | 1939-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-08-10 | 1943-02-09 | 1943-08-11 | $7700.00 | Window Closed / Lapsed |