US2694573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of illuminating golf courses
Assignee: Individual
•
Filing: 1951-04-13
•
Granted: 1954-11-16
•
Expires: 1971-04-13
Abstract
No abstract record available.
Inventors
- 👤 Neville E Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:17
CPC Classifications
F; F21; F21S; F21S9/00; F21S9/04; F21W; F21W2131/00; F21W2131/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US850570A
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US1365279A
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US1944751A
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FR740476A
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US2078677A
Cited
US1934576A
Cited
US2181388A
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US2230458A
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US2360420A
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US2483615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |