US2535243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Timed reading device
Assignee: Individual
•
Filing: 1949-11-14
•
Granted: 1950-12-26
•
Expires: 1969-11-14
Abstract
No abstract record available.
Inventors
- 👤 Stanford E Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:59
CPC Classifications
G; G09; G09B; G09B17/00; G09B17/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1193735A
Cited
US1308698A
Cited
US1683263A
Cited
US1869522A
Cited
US2162766A
Cited
US2266798A
Cited
US2337621A
Cited
US2357593A
Cited
US2402109A
Cited
US2487242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |