US3047711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric welding system
Assignee: Omark Industries Inc
•
Filing: 1958-09-08
•
Granted: 1962-07-31
•
Expires: 1978-09-08
Abstract
No abstract record available.
Inventors
- 👤 Harold J Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:50
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; B; B23; B23K; B23K9/00; B23K9/20; B23K9/201; B23K9/202; C07D409/00; C07D409/02; C07D409/12
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |