Patent US2287328A successfully refreshed from Google Patents.
US2287328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Studio spot lamp
Assignee: Bardwell and McAlister Inc
•
Filing: 1941-02-03
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Granted: 1942-06-23
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Expires: 1961-02-03
Abstract
No abstract record available.
Inventors
- 👤 Jess C Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:23
CPC Classifications
F; F21; F21V; F21V29/00; F21V29/50; F21V29/70; F21V29/83; G; G03; G03B; G03B15/00; G03B15/02; F21W; F21W2102/00; F21W2131/00; F21W2131/40; F21W2131/406
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) | 1945-06-22 | 1945-12-22 | 1946-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-06-22 | 1949-12-22 | 1950-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-06-22 | 1953-12-22 | 1954-06-23 | $7700.00 | Window Closed / Lapsed |