Patent US2865671A successfully refreshed from Google Patents.
US2865671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
jensen
Assignee: —
•
Filing: —
•
Granted: 1958-12-23
•
Expires: 1975-12-23
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:29
CPC Classifications
A; A01; A01M; A01M13/00; F; F01; F01N; F01N13/00; F01N13/08; F01N13/082; F01N5/00; F01N5/02; Y; Y10; Y10S; Y10S56/00; Y10S56/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US514523A
Cited
FR716299A
Cited
US1973715A
Cited
US2528927A
Cited
US2685146A
Cited
US2611992A
Cited
US2737340A
Cited
US2759292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |