US3384031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railway transporation system
Assignee: Dashaveyor Co
•
Filing: 1965-02-15
•
Granted: 1968-05-21
•
Expires: 1985-02-15
Abstract
No abstract record available.
Inventors
- 👤 Stanley A Dashew
- 👤 Mers Herbert La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:58
CPC Classifications
E; E01; E01B; E01B25/00; B; B61; B61B; B61B13/00; B61B13/10; B61C; B61C11/00; B61C11/04; B61C13/00; B61F; B61F11/00; B61K; B61K1/00; E21; E21F; E21F13/00; E21F13/02
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) | 1971-05-21 | 1971-11-20 | 1972-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-21 | 1975-11-20 | 1976-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-21 | 1979-11-20 | 1980-05-21 | $7700.00 | Window Closed / Lapsed |