US2938472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aerial tramways
Assignee: Individual
•
Filing: 1955-04-18
•
Granted: 1960-05-31
•
Expires: 1975-04-18
Abstract
No abstract record available.
Inventors
- 👤 Tiegel Ernest George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:09
CPC Classifications
B; B61; B61B; B61B12/00; B61B12/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US348725A
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US396054A
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US885455A
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US1030423A
Cited
US1344924A
Cited
DE514270C
Cited
US2516383A
Cited
AT163322B
Cited
US2632402A
Cited
US2630618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |