Patent US1540121A successfully refreshed from Google Patents.
US1540121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of teledynamic control
Assignee: Individual
•
Filing: 1913-03-21
•
Granted: 1925-06-02
•
Expires: 1933-03-21
Abstract
No abstract record available.
Inventors
- 👤 Jr John Hays Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:51
CPC Classifications
F; F41; F41G; F41G7/00; F42; F42B; F42B19/00; F42B19/01; F42B19/10
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) | 1928-06-01 | 1928-12-01 | 1929-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-06-01 | 1932-12-01 | 1933-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-06-01 | 1936-12-01 | 1937-06-02 | $7700.00 | Window Closed / Lapsed |