US2201294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoflash lamp
Assignee: Westinghouse Electric Corp
•
Filing: 1937-09-23
•
Granted: 1940-05-21
•
Expires: 1957-09-23
Abstract
No abstract record available.
Inventors
- 👤 Kreidler Raymond Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:54
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-05-21 | 1943-11-20 | 1944-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-05-21 | 1947-11-20 | 1948-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-05-21 | 1951-11-20 | 1952-05-21 | $7700.00 | Window Closed / Lapsed |