Patent US3061780A successfully refreshed from Google Patents.
US3061780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polar displayer
Assignee: Individual
•
Filing: 1956-03-19
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Granted: 1962-10-30
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Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 Jr Chester B Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:34
CPC Classifications
G; G01; G01R; G01R23/00
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-29 | 1966-04-30 | 1966-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-29 | 1970-04-30 | 1970-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-29 | 1974-04-30 | 1974-10-30 | $7700.00 | Window Closed / Lapsed |