US2587476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for internal magnetic and mechanical inspection of pipes and the like
Assignee: Individual
•
Filing: 1949-08-23
•
Granted: 1952-02-26
•
Expires: 1969-08-23
Abstract
No abstract record available.
Inventors
- 👤 Huhn Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:46
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/24; G02B23/2476; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/83; G01N27/84
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2371176A
Cited
US1591258A
Cited
US1602233A
Cited
US1947729A
Cited
GB463361A
Cited
US2158409A
Cited
US2196922A
Cited
US2124579A
Cited
US2265136A
Cited
US2245792A
Cited
US2257736A
Cited
GB547714A
Cited
US2334827A
Cited
US2363701A
Cited
US2495545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |