US1776587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding machine and method
Assignee: Metropolitan Engineering Co
•
Filing: 1924-09-10
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Granted: 1930-09-23
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Expires: 1944-09-10
Abstract
No abstract record available.
Inventors
- 👤 Henry S Holmes
- 👤 Le Roy H Hoffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:17
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/24; B23K11/25; B23K11/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1933-09-22 | 1934-03-24 | 1934-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-22 | 1938-03-24 | 1938-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-22 | 1942-03-24 | 1942-09-23 | $7700.00 | Window Closed / Lapsed |