Patent US3280651A successfully refreshed from Google Patents.
Patent US2075264A successfully refreshed from Google Patents.
US2075264A
Expired / Lapsed
US
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Spark arrester and silencer
Assignee: Maxim Silencer Co
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Filing: 1935-04-03
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Granted: 1937-03-30
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Expires: 1955-04-03
Abstract
No abstract record available.
Inventors
- 👤 Roland B Bourne
- 👤 Hiram H Maxim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:04
CPC Classifications
F; F01; F01N; F01N1/00; F01N1/02; F01N1/08; F01N1/083; F01N3/00; F01N3/02; F01N3/037; F01N3/06; F01N2230/00; F01N2230/06; F01N2490/00; F01N2490/15; F01N2490/155; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
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) | 1940-03-29 | 1940-09-28 | 1941-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-03-29 | 1944-09-28 | 1945-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-03-29 | 1948-09-28 | 1949-03-30 | $7700.00 | Window Closed / Lapsed |