US2794905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Railroad inspector's lamp
Assignee: Koehler Manufacturing Co
•
Filing: 1954-03-15
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Granted: 1957-06-04
•
Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Homer A Lozeau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:59
CPC Classifications
F; F21; F21V; F21V19/00; F21V19/02; F21L; F21L2/00; F21L4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1309140A
Cited
US1592178A
Cited
GB354697A
Cited
US2257866A
Cited
US2628305A
Cited
US2611072A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |