Patent US1914934A successfully refreshed from Google Patents.
Patent US2994328A successfully refreshed from Google Patents.
US2994328A
Expired / Lapsed
US
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Rod patenting
Assignee: Siemens Industry Inc
•
Filing: 1956-07-20
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Granted: 1961-08-01
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Lewis Dartrey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:40
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/56; C21D9/573; C21D9/5732; B; B21; B21B; B21B37/00; B21B37/74; B21B45/00; B21B45/02; B21B45/0203; B21B45/0209; B21B45/0215; B21B45/0224; B21B1/00; B21B1/16; B21B1/18
Claims Analysis
Total Claims: 0
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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) | 1964-07-31 | 1965-01-30 | 1965-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-31 | 1969-01-30 | 1969-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-31 | 1973-01-30 | 1973-08-01 | $7700.00 | Window Closed / Lapsed |