US2983914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Warning light which causes light rays to travel in a conical path
Assignee: WESTERN PROGRESS MANUFACTURERS
•
Filing: 1957-12-26
•
Granted: 1961-05-09
•
Expires: 1977-12-26
Abstract
No abstract record available.
Inventors
- 👤 Frank I Fuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:58
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/2611
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1213505A
Cited
US2210718A
Cited
GB665840A
Cited
US2666193A
Cited
US2738414A
Cited
US2881307A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |