Patent US2728848A successfully refreshed from Google Patents.
US2728848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mounting for lighting fixtures
Assignee: THOMPSON ELECTRIC CO
•
Filing: 1952-05-20
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Granted: 1955-12-27
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Expires: 1972-05-20
Abstract
No abstract record available.
Inventors
- 👤 Thayer B Farrington
- 👤 Robert K Farrington
- 👤 Fred K Ikeda
- 👤 Robert P Mercer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:08
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/10; F21V21/116; F21V21/36; F21V21/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US559066A
Cited
US668887A
Cited
US994441A
Cited
US1133266A
Cited
US1834535A
Cited
US2024331A
Cited
US2403355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |