US2469062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for full fusion welding of rails
Assignee: Individual
•
Filing: 1944-10-14
•
Granted: 1949-05-03
•
Expires: 1964-10-14
Abstract
No abstract record available.
Inventors
- 👤 Edward F Begtrup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:32
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/06; B23K2101/00; B23K2101/26; Y; Y10; Y10S; Y10S164/00; Y10S164/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US840153A
Cited
US1556402A
Cited
US1803374A
Cited
US1759831A
Cited
US1795332A
Cited
US1917868A
Cited
US2418649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-02 | 1952-11-01 | 1953-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-02 | 1956-11-01 | 1957-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-02 | 1960-11-01 | 1961-05-03 | $7700.00 | Window Closed / Lapsed |