US2802956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pendulum apparatus
Assignee: Research Corp
•
Filing: 1951-04-25
•
Granted: 1957-08-13
•
Expires: 1971-04-25
Abstract
No abstract record available.
Inventors
- 👤 John J Jarosh
- 👤 Joseph E Picardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
G; G01; G01C; G01C9/00; G01C9/12; Y; Y10; Y10T; Y10T74/00; Y10T74/12; Y10T74/1229
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2598672A
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US2488734A
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US2595268A
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US2585024A
Cited
US2618159A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |