US2423155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure restricting device
Assignee: Individual
•
Filing: 1943-11-11
•
Granted: 1947-07-01
•
Expires: 1963-11-11
Abstract
No abstract record available.
Inventors
- 👤 Philip H Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:12
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0186; F; F15; F15D; F15D1/00; F15D1/02; F15D1/025; B; B67; B67D; B67D1/00; B67D1/0042; B67D1/0057; B67D1/006; B67D1/08; B67D1/12; B67D1/14; B67D2210/00; B67D2210/00002; B67D2210/00005; B67D2210/0001; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1095555A
Cited
US1453048A
Cited
GB192956A
Cited
US1539256A
Cited
US1984472A
Cited
US2212186A
Cited
US2132011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-06-30 | 1950-12-30 | 1951-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-06-30 | 1954-12-30 | 1955-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-06-30 | 1958-12-30 | 1959-07-01 | $7700.00 | Window Closed / Lapsed |