Patent US3031750A successfully refreshed from Google Patents.
US3031750A
Expired / Lapsed
US
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Method of producing steel bars
Assignee: RODS Inc
•
Filing: 1958-02-14
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Granted: 1962-05-01
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Expires: 1978-02-14
Abstract
No abstract record available.
Inventors
- 👤 Planck Gordon L Von
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:52
CPC Classifications
C; C21; C21D; C21D7/00; C21D7/02; C21D7/10; C21D7/105; B; B21; B21D; B21D3/00; B21D3/02; B21D3/05; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1809880A
Cited
US1929356A
Cited
US2136538A
Cited
US2347904A
Cited
GB585918A
Cited
GB696384A
Cited
US2700627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-30 | 1965-10-30 | 1966-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-30 | 1969-10-30 | 1970-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-30 | 1973-10-30 | 1974-05-01 | $7700.00 | Window Closed / Lapsed |