US2429602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Grinnell Corp
•
Filing: 1944-07-27
•
Granted: 1947-10-28
•
Expires: 1964-07-27
Abstract
No abstract record available.
Inventors
- 👤 Henry W Boteler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:14
CPC Classifications
F; F16; F16K; F16K27/00; F16K27/10; F16K27/102; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1800157A
Cited
US1935329A
Cited
US2034418A
Cited
US2122957A
Cited
GB489602A
Cited
US2191863A
Cited
US2186833A
Cited
US2227542A
Cited
US2363943A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |