US2849018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vent valve for relieving pressure
Assignee: Honeywell International Inc
•
Filing: 1955-12-28
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Granted: 1958-08-26
•
Expires: 1975-12-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Donegan
- 👤 Benjamin S Penley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:10
CPC Classifications
F; F16; F16K; F16K24/00; F16K24/04; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4643
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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |