US2993728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer construction
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1957-02-13
•
Granted: 1961-07-25
•
Expires: 1977-02-13
Abstract
No abstract record available.
Inventors
- 👤 Robert J Beran
- 👤 Jacob S Beruldsen
- 👤 Donald L Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:49
CPC Classifications
B; B62; B62D; B62D53/00; B62D53/04; B62D53/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2528818A
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US2744042A
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US2606769A
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US2682419A
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US2773718A
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US2831735A
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US2839311A
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US2901283A
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US2888297A
Cited
US2831700A
Cited
US2835504A
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US2841415A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-07-24 | 1965-01-23 | 1965-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-07-24 | 1969-01-23 | 1969-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-07-24 | 1973-01-23 | 1973-07-25 | $7700.00 | Window Closed / Lapsed |