Patent US796757A successfully refreshed from Google Patents.
US796757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric incandescent lamp.
Assignee: PHELPS Co
•
Filing: 1902-04-25
•
Granted: 1905-08-08
•
Expires: 1922-04-25
Abstract
No abstract record available.
Inventors
- 👤 William J Phelps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:54
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/02; B60Q1/22; H; H01; H01K; H01K1/00; H01K1/02; H01K1/14
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1908-08-07 | 1909-02-06 | 1909-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1912-08-07 | 1913-02-06 | 1913-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1916-08-07 | 1917-02-06 | 1917-08-08 | $7700.00 | Window Closed / Lapsed |