Patent US2512038A successfully refreshed from Google Patents.
US1289550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric lamp.
Assignee: IMPORT SALES Co
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Filing: 1918-03-07
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Granted: 1918-12-31
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Expires: 1938-03-07
Abstract
No abstract record available.
Inventors
- 👤 Francis M Rosenfeld
- 👤 Louis E Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:56
CPC Classifications
F; F21; F21V; F21V21/00; F21V21/08; F21V21/088; F21V17/00; F21V17/007; F21S; F21S6/00; F21V15/00; F21V15/01; F21V15/015
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) | 1921-12-30 | 1922-07-01 | 1922-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1925-12-30 | 1926-07-01 | 1926-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1929-12-30 | 1930-07-01 | 1930-12-31 | $7700.00 | Window Closed / Lapsed |