US2847970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transilluminated dial
Assignee: Individual
•
Filing: 1955-02-16
•
Granted: 1958-08-19
•
Expires: 1975-02-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:58
CPC Classifications
G; G04; G04B; G04B19/00; G04B19/30; Y; Y10; Y10S; Y10S116/00; Y10S116/36
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2172765A
Cited
US2227368A
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US2287605A
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US2410064A
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US2561885A
Cited
DE827715C
Cited
US2702340A
Cited
US2715886A
Cited
US2761056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |