Patent US2854562A successfully refreshed from Google Patents.
US2854562A
Expired / Lapsed
US
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Projected spotlight heat shielding apparatus
Assignee: Individual
•
Filing: 1955-10-04
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Granted: 1958-09-30
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Expires: 1975-10-04
Abstract
No abstract record available.
Inventors
- 👤 James A Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:39
CPC Classifications
G; G03; G03B; G03B21/00; G03B21/14; G03B21/18; F; F21; F21V; F21V29/00; F21V29/15; F21W; F21W2131/00; F21W2131/40; F21W2131/406
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1518141A
Cited
US1591206A
Cited
US1981033A
Cited
US1866549A
Cited
US2246971A
Cited
US2464887A
Cited
US2705278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-29 | 1962-03-31 | 1962-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-29 | 1966-03-31 | 1966-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-29 | 1970-03-31 | 1970-09-30 | $7700.00 | Window Closed / Lapsed |