US2857764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotor balance testing machine
Assignee: MICRO BALANCING Inc
•
Filing: 1956-01-13
•
Granted: 1958-10-28
•
Expires: 1976-01-13
Abstract
No abstract record available.
Inventors
- 👤 Frank Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:06
CPC Classifications
G; G01; G01M; G01M1/00; G01M1/14; G01M1/16; G01M1/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2704452A
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US2308950A
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US2359245A
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US2382843A
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US2394411A
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US2594581A
Cited
US2547764A
Cited
US2772569A
Cited
US2754686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |