US3049609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc welding system
Assignee: Airco Inc
•
Filing: 1960-11-04
•
Granted: 1962-08-14
•
Expires: 1980-11-04
Abstract
No abstract record available.
Inventors
- 👤 Rawlins E Purkhiser
- 👤 William F Iceland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:59
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/06; B23K9/073; B23K9/0731
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2510204A
Cited
US2789254A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |