US3488467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for welding rail sections to form a continuous rail
Assignee: Chemetron Corp
•
Filing: 1967-01-09
•
Granted: 1970-01-06
•
Expires: 1987-01-09
Abstract
No abstract record available.
Inventors
- 👤 Richard M Ansel
- 👤 Alfred Neukom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 23:39
CPC Classifications
B; B23; B23K; B23K37/00; B23K37/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2193490A
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US2250869A
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US2297893A
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US2459625A
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US2787698A
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US2945117A
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US2911516A
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US3081673A
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US3030494A
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US3204079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |