US3058239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spherical tracking, plotting and projection apparatus
Assignee: Individual
•
Filing: 1958-10-16
•
Granted: 1962-10-16
•
Expires: 1978-10-16
Abstract
No abstract record available.
Inventors
- 👤 Edward J Madden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:28
CPC Classifications
G; G09; G09B; G09B27/00; G09B27/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2883768A
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US2962781A
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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) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |