US2895503A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring valve
Assignee: International Motors LLC
•
Filing: 1956-06-25
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Granted: 1959-07-21
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Expires: 1976-06-25
Abstract
No abstract record available.
Inventors
- 👤 Jr C Paul Kolthoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:47
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/0446; F16K15/00; F16K15/02; F16K15/06; F16K15/063; F16K15/064; F16K17/0413; F16K2200/00; F16K2200/30; F16K2200/305; F16K2200/3051; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7936
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US666145A
Cited
US797739A
Cited
US881516A
Cited
US1227759A
Cited
US1637821A
Cited
US2149434A
Cited
US2599499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-20 | 1963-01-19 | 1963-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-20 | 1967-01-19 | 1967-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-20 | 1971-01-19 | 1971-07-21 | $7700.00 | Window Closed / Lapsed |