US3456333A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of welding rails to produce a prestressed rail
Assignee: Individual
•
Filing: 1966-06-07
•
Granted: 1969-07-22
•
Expires: 1986-06-07
Abstract
No abstract record available.
Inventors
- 👤 Hermann Meier
- 👤 Joseph Eisenmann
- 👤 Ruthard Dohse
- 👤 Wilhelm Ahlert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:08
CPC Classifications
E; E01; E01B; E01B11/00; E01B11/44; E01B11/52; B; B23; B23K; B23K37/00; B23K37/003; C; C21; C21D; C21D9/00; C21D9/50; E01B11/46; E01B31/00; E01B31/02; E01B31/18; B23K2101/00; B23K2101/26; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193238A
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US3125804A
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US1132052A
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US1516407A
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US2039398A
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US2299778A
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US2853775A
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US3266956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |