US2981828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety lamp assembly
Assignee: CM Hall Lamp Co
•
Filing: 1955-08-01
•
Granted: 1961-04-25
•
Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Norbert P Worden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:05
CPC Classifications
B; B60; B60Q; B60Q7/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2591131A
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US2680841A
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US2637804A
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US2685639A
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US2689945A
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US2702556A
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US2806937A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |