US2235304A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: PERFECTION GEAR Co
•
Filing: 1938-12-01
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Granted: 1941-03-18
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Expires: 1958-12-01
Abstract
No abstract record available.
Inventors
- 👤 Charles F Toussaint
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:28
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/365; F16K31/38; F16K31/385; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7781; Y10T137/7793; Y10T137/7796; Y10T137/7801
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) | 1944-03-17 | 1944-09-16 | 1945-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-03-17 | 1948-09-16 | 1949-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-03-17 | 1952-09-16 | 1953-03-18 | $7700.00 | Window Closed / Lapsed |