US2492579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of gaseously expanding hollow rivets
Assignee: United Airlines Inc
•
Filing: 1941-08-11
•
Granted: 1949-12-27
•
Expires: 1961-08-11
Abstract
No abstract record available.
Inventors
- 👤 Bertrand B Kahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:10
CPC Classifications
B; B21; B21D; B21D39/00; B21D39/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/49938; Y10T29/49943
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US120515A
Cited
US446466A
Cited
US1415124A
Cited
US1400401A
Cited
US1770071A
Cited
US1809154A
Cited
US2045126A
Cited
US1945480A
Cited
US2062966A
Cited
US2092358A
Cited
US2162164A
Cited
FR818121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |