Patent US2416865A successfully refreshed from Google Patents.
US2416865A
Expired / Lapsed
US
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Machine for forming and winding fin strips
Assignee: Individual
•
Filing: 1944-01-20
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Granted: 1947-03-04
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Expires: 1964-01-20
Abstract
No abstract record available.
Inventors
- 👤 Wilhelm B Bronander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:21
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/06; B21C37/15; B21C37/22; B21C37/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US434804A
Cited
US455621A
Cited
US726691A
Cited
US1216657A
Cited
US1498891A
Cited
US1490772A
Cited
US2209472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-03-03 | 1950-09-02 | 1951-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-03 | 1954-09-02 | 1955-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-03 | 1958-09-02 | 1959-03-04 | $7700.00 | Window Closed / Lapsed |