Patent US2347901A successfully refreshed from Google Patents.
US2347901A
Expired / Lapsed
US
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Apparatus for forming tubular material
Assignee: Lever Bias Machine Corp
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Filing: 1941-03-19
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Granted: 1944-05-02
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Expires: 1961-03-19
Abstract
No abstract record available.
Inventors
- 👤 Gardner Percy
- 👤 Kagan Ralph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:25
CPC Classifications
D; D06; D06H; D06H5/00; D05; D05B; D05B23/00; D05D; D05D2305/00; D05D2305/02; D05D2305/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-05-02 | 1947-11-01 | 1948-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-05-02 | 1951-11-01 | 1952-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-05-02 | 1955-11-01 | 1956-05-02 | $7700.00 | Window Closed / Lapsed |