Patent US2761397A successfully refreshed from Google Patents.
US2761397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer
Assignee: Airco Inc
•
Filing: 1951-12-21
•
Granted: 1956-09-04
•
Expires: 1971-12-21
Abstract
No abstract record available.
Inventors
- 👤 Holst John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:55
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/055; F; F17; F17C; F17C13/00; F17C13/08; F17C13/084; F17C13/085; F17C2201/00; F17C2201/01; F17C2201/0104; F17C2201/0109; F17C2201/03; F17C2201/035; F17C2205/00; F17C2205/01; F17C2205/0103; F17C2205/0107; F17C2205/0123; F17C2205/013; F17C2205/0134; F17C2205/03; F17C2205/0302; F17C2205/0323; F17C2205/0329; F17C2205/0388; F17C2205/0394; F17C2205/0397; F17C2270/00; F17C2270/01; F17C2270/0165; F17C2270/0168; F17C2270/0171
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1661000A
Cited
US2024411A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-04 | 1960-03-05 | 1960-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-04 | 1964-03-05 | 1964-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-04 | 1968-03-05 | 1968-09-04 | $7700.00 | Window Closed / Lapsed |