Patent US4042648A successfully refreshed from Google Patents.
Patent US2419675A successfully refreshed from Google Patents.
US2419675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hanger
Assignee: Individual
•
Filing: 1944-05-30
•
Granted: 1947-04-29
•
Expires: 1964-05-30
Abstract
No abstract record available.
Inventors
- 👤 John A Carpenter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:16
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/22; F16L3/223; F16L3/227
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US525186A
Cited
US895842A
Cited
US1221705A
Cited
US1357389A
Cited
US1802965A
Cited
US2245751A
Cited
US2348096A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-28 | 1950-10-28 | 1951-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-28 | 1954-10-28 | 1955-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-28 | 1958-10-28 | 1959-04-29 | $7700.00 | Window Closed / Lapsed |