US1499640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dirigible lamp
Assignee: Individual
•
Filing: 1921-11-16
•
Granted: 1924-07-01
•
Expires: 1941-11-16
Abstract
No abstract record available.
Inventors
- 👤 Lucius D Copeland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:19
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/04; B60Q1/14; B60Q1/1438; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/2042; Y10T74/20432
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) | 1927-07-01 | 1927-12-31 | 1928-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-07-01 | 1931-12-31 | 1932-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-07-01 | 1935-12-31 | 1936-07-01 | $7700.00 | Window Closed / Lapsed |