US2631605A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring loaded safety valve
Assignee: Manning Maxwell and Moore Inc
•
Filing: 1949-11-23
•
Granted: 1953-03-17
•
Expires: 1969-11-23
Abstract
No abstract record available.
Inventors
- 👤 Robert A Tobis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:32
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/08; F16K17/082; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7738; Y10T137/7741; Y10T137/7744; Y10T137/7745; Y10T137/7747
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2278437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-16 | 1956-09-15 | 1957-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-16 | 1960-09-15 | 1961-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-16 | 1964-09-15 | 1965-03-17 | $7700.00 | Window Closed / Lapsed |