US2877340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Illuminator
Assignee: Individual
•
Filing: 1956-04-17
•
Granted: 1959-03-10
•
Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Spaulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:36
CPC Classifications
F; F21; F21S; F21S8/00; F21S8/08; F21S8/085; F21S8/088; F21Y; F21Y2103/00; Y; Y10; Y10S; Y10S47/00; Y10S47/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US740347A
Cited
US901284A
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US1682693A
Cited
US1859136A
Cited
US2336414A
Cited
GB623992A
Cited
US2545307A
Cited
US2625646A
Cited
US2626688A
Cited
US2800574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |