US3403367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Potted ballast transformer
Assignee: Sherwin Williams Co
•
Filing: 1967-01-19
•
Granted: 1968-09-24
•
Expires: 1987-01-19
Abstract
No abstract record available.
Inventors
- 👤 Robert D Holzinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:48
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01F; H01F27/00; H01F27/02; H01F27/022; H01F27/33; Y; Y10; Y10S; Y10S174/00; Y10S174/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2882505A
Cited
US2930011A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-24 | 1972-03-25 | 1972-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-24 | 1976-03-25 | 1976-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-24 | 1980-03-25 | 1980-09-24 | $7700.00 | Window Closed / Lapsed |