US2903559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torch for arc-welding
Assignee: Individual
•
Filing: 1953-12-21
•
Granted: 1959-09-08
•
Expires: 1973-12-21
Abstract
No abstract record available.
Inventors
- 👤 Wempe Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:31
CPC Classifications
B; B23; B23K; B23K28/00; B23K28/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2053417A
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GB546961A
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US2522482A
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US2497631A
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US2544711A
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US2576793A
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US2686860A
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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) | 1962-09-07 | 1963-03-09 | 1963-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-07 | 1967-03-09 | 1967-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-07 | 1971-03-09 | 1971-09-08 | $7700.00 | Window Closed / Lapsed |