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US2356023A
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Article and process of making the same
Assignee: Sylvania Industrial Corp
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Filing: 1941-08-16
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Granted: 1944-08-15
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Expires: 1961-08-16
Abstract
No abstract record available.
Inventors
- 👤 George J Alles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:59
CPC Classifications
F; F21; F21V; F21V1/00; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/1362; Y10T428/1369; Y10T428/1386; Y10T428/24; Y10T428/24802; Y10T428/24826
Claims Analysis
Total Claims: 0
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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) | 1947-08-15 | 1948-02-14 | 1948-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-08-15 | 1952-02-14 | 1952-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-08-15 | 1956-02-14 | 1956-08-15 | $7700.00 | Window Closed / Lapsed |