Patent US2904829A successfully refreshed from Google Patents.
US2904829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Devices for the rolling of strip from metal powder
Assignee: Individual
•
Filing: 1956-04-30
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Granted: 1959-09-22
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Heck Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:24
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US870249A
Cited
US1289275A
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US1185399A
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US1361970A
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US2341732A
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US2397608A
Cited
US2349829A
Cited
US2817875A
Cited
US2811750A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |