Patent US1788111A successfully refreshed from Google Patents.
US1788111A
Expired / Lapsed
US
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Street-lighting system
Assignee: Westinghouse Electric Corp
•
Filing: 1928-08-22
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Granted: 1931-01-06
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Expires: 1948-08-22
Abstract
No abstract record available.
Inventors
- 👤 Dewey D Knowles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:25
CPC Classifications
H; H01; H01J; H01J40/00; H01J40/02; H01J40/14; Y; Y10; Y10S; Y10S70/00; Y10S70/51
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) | 1934-01-05 | 1934-07-07 | 1935-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1938-01-05 | 1938-07-07 | 1939-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1942-01-05 | 1942-07-07 | 1943-01-06 | $7700.00 | Window Closed / Lapsed |