Patent US2252504A successfully refreshed from Google Patents.
US2252504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of mounting lenses in illuminated signs, etc.
Assignee: AUTOMATIC BUTTON Co
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Filing: 1939-07-24
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Granted: 1941-08-12
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Expires: 1959-07-24
Abstract
No abstract record available.
Inventors
- 👤 Hahn Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:01
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/16; Y; Y10; Y10S; Y10S264/00; Y10S264/71; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865
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) | 1944-08-11 | 1945-02-10 | 1945-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-08-11 | 1949-02-10 | 1949-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-08-11 | 1953-02-10 | 1953-08-12 | $7700.00 | Window Closed / Lapsed |