Patent US2969751A successfully refreshed from Google Patents.
US2969751A
Expired / Lapsed
US
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Apparatus and method for land transportation
Assignee: Commonwealth Engineering Company of Ohio
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Filing: 1955-12-07
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Granted: 1961-01-31
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Expires: 1975-12-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Toulmin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:20
CPC Classifications
B; B62; B62D; B62D1/00; B62D1/24; B62D1/26; B62D1/265; B60; B60F; B60F1/00; B60F1/005; B60K; B60K3/00; B60K3/04; B61; B61C; B61C11/00; B61C11/06; B62D21/00; B62D21/02; B62D21/04; B62D53/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-31 | 1964-08-01 | 1965-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-31 | 1968-08-01 | 1969-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-31 | 1972-08-01 | 1973-01-31 | $7700.00 | Window Closed / Lapsed |