US3021418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stud-welding ferrule
Assignee: US Philips Corp
•
Filing: 1958-06-06
•
Granted: 1962-02-13
•
Expires: 1978-06-06
Abstract
No abstract record available.
Inventors
- 👤 Blink Willem Pieter Van Den
- 👤 Haar Karel Christiaan The
- 👤 Ettema Eelke Herman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:20
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/20; B23K9/201; B23K9/207; B23K9/208
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2462882A
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US2384403A
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US2416204A
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US2422265A
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US2459957A
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US2416915A
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US2493283A
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US2510000A
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US2643319A
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US2829234A
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US2745933A
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US2775685A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-12 | 1965-08-14 | 1966-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-12 | 1969-08-14 | 1970-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-12 | 1973-08-14 | 1974-02-13 | $7700.00 | Window Closed / Lapsed |