US921280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time-indicating system.
Assignee: Individual
•
Filing: 1909-01-25
•
Granted: 1909-05-11
•
Expires: 1929-01-25
Abstract
No abstract record available.
Inventors
- 👤 Albert A Radtke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:44
CPC Classifications
G; G04; G04C; G04C13/00; G04C13/02; G04C13/027
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) | 1912-05-10 | 1912-11-09 | 1913-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-05-10 | 1916-11-09 | 1917-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-05-10 | 1920-11-09 | 1921-05-11 | $7700.00 | Window Closed / Lapsed |