US2954985A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-steering tandem bogie
Assignee: Individual
•
Filing: 1955-10-31
•
Granted: 1960-10-04
•
Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Peter G Drong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:26
CPC Classifications
B; B62; B62D; B62D49/00; B62D49/005; B62D7/00; B62D7/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1871735A
Cited
US1881070A
Cited
GB395144A
Cited
US2139937A
Cited
DE660794C
Cited
US2269728A
Cited
US2493025A
Cited
US2579556A
Cited
DE830899C
Cited
DE858928C
Cited
GB738583A
Cited
FR1078037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |