US2747600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve lubricating system
Assignee: W K M Manufacturing Co Inc
•
Filing: 1952-03-13
•
Granted: 1956-05-29
•
Expires: 1972-03-13
Abstract
No abstract record available.
Inventors
- 👤 Milton P Laurent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:16
CPC Classifications
F; F16; F16K; F16K3/00; F16K3/30; F16K3/36; Y; Y10; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4358; Y10T137/4442
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US703583A
Cited
US1476344A
Cited
US2030458A
Cited
US2148628A
Cited
US2570413A
Cited
US2600898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |