US2808882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple valve
Assignee: Individual
•
Filing: 1953-12-01
•
Granted: 1957-10-08
•
Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Aukerman Malcolm Harry
- 👤 Lincoln Hubert Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/68; C02F1/685; C02F1/686; F; F16; F16K; F16K11/00; F16K11/10; F16K11/14; F16K11/16; Y; Y10; Y10T; Y10T137/00; Y10T137/8158; Y10T137/8175; Y10T137/8593; Y10T137/86389; Y10T137/87096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2061797A
Cited
US2042178A
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US2052515A
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US2231460A
Cited
US2309032A
Cited
US2438407A
Cited
US2665251A
Cited
US2646072A
Cited
US2610945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-07 | 1961-04-08 | 1961-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-07 | 1965-04-08 | 1965-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-07 | 1969-04-08 | 1969-10-08 | $7700.00 | Window Closed / Lapsed |