US2728819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical trolley construction
Assignee: Individual
•
Filing: 1950-09-13
•
Granted: 1955-12-27
•
Expires: 1970-09-13
Abstract
No abstract record available.
Inventors
- 👤 Hauss Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:10
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US412666A
Cited
US448461A
Cited
US455447A
Cited
US693351A
Cited
FR336504A
Cited
GB347409A
Cited
US2304924A
Cited
US2137694A
Cited
US2210171A
Cited
US2495526A
Cited
US2562979A
Cited
GB633243A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |