US2229379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve stem
Assignee: F H WATSON Co
•
Filing: 1931-11-13
•
Granted: 1941-01-21
•
Expires: 1951-11-13
Abstract
No abstract record available.
Inventors
- 👤 Keefe Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:51
CPC Classifications
B; B60; B60C; B60C5/00; B60C5/02; B60C5/04; Y; Y10; Y10S; Y10S152/00; Y10S152/07; Y10T; Y10T137/00; Y10T137/3584; Y10T137/374
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-01-21 | 1944-07-22 | 1945-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-01-21 | 1948-07-22 | 1949-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-01-21 | 1952-07-22 | 1953-01-21 | $7700.00 | Window Closed / Lapsed |