US2590389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time recording apparatus for race tracks
Assignee: Individual
•
Filing: 1946-08-23
•
Granted: 1952-03-25
•
Expires: 1966-08-23
Abstract
No abstract record available.
Inventors
- 👤 Douglas J Doyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:57
CPC Classifications
G; G04; G04F; G04F13/00; G04F13/02; G03; G03B; G03B15/00
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2396280A
Cited
US516278A
Cited
US621314A
Cited
USRE22881E
Cited
US212865A
Cited
US1723926A
Cited
US1849939A
Cited
US2255266A
Cited
US2250442A
Cited
US2306885A
Cited
US2302331A
Cited
US2348841A
Cited
US2403911A
Cited
US2353633A
Cited
US2521667A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-03-25 | 1955-09-24 | 1956-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-25 | 1959-09-24 | 1960-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-25 | 1963-09-24 | 1964-03-25 | $7700.00 | Window Closed / Lapsed |