US2521201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiator pressure cap
Assignee: Individual
•
Filing: 1949-02-23
•
Granted: 1950-09-05
•
Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Bruce E Clark
- 👤 Gerald K Vieson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:45
CPC Classifications
F; F01; F01P; F01P11/00; F01P11/02; F01P11/0204; F01P11/0209; F01P11/0238; Y; Y10; Y10S; Y10S220/00; Y10S220/32; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7771; Y10T137/7778; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-04 | 1954-03-06 | 1954-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-04 | 1958-03-06 | 1958-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-04 | 1962-03-06 | 1962-09-05 | $7700.00 | Window Closed / Lapsed |