US2713629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Luminous bodies
Assignee: Individual
•
Filing: 1950-09-05
•
Granted: 1955-07-19
•
Expires: 1970-09-05
Abstract
No abstract record available.
Inventors
- 👤 Walter V Etzkorn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/26; F; F21; F21S; F21S4/00; F21S4/20; F21S4/22; F21V; F21V9/00; F21V9/30; F21V9/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE208509C
Cited
US261351A
Cited
US1839479A
Cited
US2064354A
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US2558747A
Cited
US2468773A
Cited
US2486859A
Cited
US2587855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-18 | 1959-01-17 | 1959-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-18 | 1963-01-17 | 1963-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-18 | 1967-01-17 | 1967-07-19 | $7700.00 | Window Closed / Lapsed |