US2351329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for making rubber torsion units
Assignee: Wingfoot Corp
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Filing: 1941-12-12
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Granted: 1944-06-13
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Expires: 1961-12-12
Abstract
No abstract record available.
Inventors
- 👤 John H Gerstenmaier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:51
CPC Classifications
B; B29; B29C; B29C33/00; B29C33/12; B29C33/123; B29C33/30; B29C33/303; B29C43/00; B29C43/02; B29C43/18; B29C43/32; B29C43/36; B29C2043/189; B29K; B29K2705/00; B29L; B29L2031/00; B29L2031/04; B29L2031/045; B29L2031/709; B29L2031/7096; B29L2031/721
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) | 1947-06-13 | 1947-12-13 | 1948-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-13 | 1951-12-13 | 1952-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-13 | 1955-12-13 | 1956-06-13 | $7700.00 | Window Closed / Lapsed |