US2452728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Couplings for flexible hose
Assignee: Individual
•
Filing: 1944-12-23
•
Granted: 1948-11-02
•
Expires: 1964-12-23
Abstract
No abstract record available.
Inventors
- 👤 Carling Edward Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:04
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/01; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49909; Y10T29/49913
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US314066A
Cited
US585014A
Cited
US1752976A
Cited
US2054362A
Cited
US1994784A
Cited
GB449042A
Cited
US2279437A
Cited
US2273398A
Cited
US2328013A
Cited
GB557580A
Cited
US2320579A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-02 | 1952-05-03 | 1952-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-02 | 1956-05-03 | 1956-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-02 | 1960-05-03 | 1960-11-02 | $7700.00 | Window Closed / Lapsed |