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US2659066A
Expired / Lapsed
US
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Indicator device
Assignee: Individual
•
Filing: 1951-03-03
•
Granted: 1953-11-10
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Expires: 1971-03-03
Abstract
No abstract record available.
Inventors
- 👤 Laurence R Sayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:32
CPC Classifications
G; G01; G01G; G01G23/00; G01G23/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1446552A
Cited
US2544038A
Cited
US1504609A
Cited
US2007317A
Cited
US2121227A
Cited
US2222364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |