US2663792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blown arc lamp
Assignee: Individual
•
Filing: 1951-01-15
•
Granted: 1953-12-22
•
Expires: 1971-01-15
Abstract
No abstract record available.
Inventors
- 👤 Gretener Edgar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:15
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/003; H05B31/0036
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US475544A
Cited
US600077A
Cited
US1318701A
Cited
US1082113A
Cited
US1711983A
Cited
US1382215A
Cited
US1641301A
Cited
US1622155A
Cited
US1654653A
Cited
US2305757A
Cited
US2540256A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-21 | 1957-06-22 | 1957-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-21 | 1961-06-22 | 1961-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-21 | 1965-06-22 | 1965-12-22 | $7700.00 | Window Closed / Lapsed |