US2744189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable lamp
Assignee: Individual
•
Filing: 1954-10-04
•
Granted: 1956-05-01
•
Expires: 1974-10-04
Abstract
No abstract record available.
Inventors
- 👤 Walter E Wudyka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:11
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; F; F21; F21S; F21S9/00; F21S9/02; F21W; F21W2121/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2361414A
Cited
US2461118A
Cited
US2439496A
Cited
US2491686A
Cited
US2681979A
Cited
US2704839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-01 | 1959-10-31 | 1960-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-01 | 1963-10-31 | 1964-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-01 | 1967-10-31 | 1968-05-01 | $7700.00 | Window Closed / Lapsed |