Patent US3448999A successfully refreshed from Google Patents.
US3448999A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trailer suspension with steerable axle
Assignee: MELVIN M KOLLANDER
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Filing: 1966-12-22
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Granted: 1969-06-10
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Expires: 1986-12-22
Abstract
No abstract record available.
Inventors
- 👤 Melvin M Kollander
- 👤 Norman A Kollander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:29
CPC Classifications
B; B62; B62D; B62D13/00; B62D13/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2333853A
Cited
US2433268A
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US2433269A
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US2785909A
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US2954239A
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US3195922A
Cited
US3291503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |