US2454338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for welding
Assignee: Individual
•
Filing: 1947-06-13
•
Granted: 1948-11-23
•
Expires: 1967-06-13
Abstract
No abstract record available.
Inventors
- 👤 Albert F Pityo
- 👤 Harry E Butterfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:07
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/30; B23K11/31
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1021732A
Cited
US1889991A
Cited
US1986512A
Cited
US2183908A
Cited
US2179326A
Cited
CH213774A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-23 | 1952-05-24 | 1952-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-23 | 1956-05-24 | 1956-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-23 | 1960-05-24 | 1960-11-23 | $7700.00 | Window Closed / Lapsed |