US2687335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston
Assignee: Individual
•
Filing: 1950-03-15
•
Granted: 1954-08-24
•
Expires: 1970-03-15
Abstract
No abstract record available.
Inventors
- 👤 Hulie E Bowerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:26
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/14; F04B53/143; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3276; Y; Y10; Y10S; Y10S277/00; Y10S277/922
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1612038A
Cited
US1844236A
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US2081040A
Cited
US2211454A
Cited
US2216291A
Cited
US2211455A
Cited
US2306838A
Cited
US2443110A
Cited
US2576025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |