US2746397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic switch for overhead track
Assignee: Individual
•
Filing: 1954-08-30
•
Granted: 1956-05-22
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Fiell Sidney Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:07
CPC Classifications
B; B61; B61L; B61L23/00; B61L23/002; B61L23/005; B65; B65G; B65G21/00; B65G21/20; E; E01; E01B; E01B25/00; E01B25/22; E01B25/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US571607A
Cited
US1072409A
Cited
US1327290A
Cited
US1327249A
Cited
US2517326A
Cited
US2535541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |