Patent US1361652A successfully refreshed from Google Patents.
US1361652A
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US
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Welding apparatus
Assignee: HYGRADE ENGINEERING Co Inc
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Filing: 1920-04-29
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Granted: 1920-12-07
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Expires: 1940-04-29
Abstract
No abstract record available.
Inventors
- 👤 Miner P Wetmore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:15
CPC Classifications
B; B23; B23K; B23K11/00; B23K11/002; B23K11/0026
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) | 1923-12-07 | 1924-06-07 | 1924-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-12-07 | 1928-06-07 | 1928-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-12-07 | 1932-06-07 | 1932-12-07 | $7700.00 | Window Closed / Lapsed |