US2972103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable recording instrument
Assignee: Industrial Instruments Inc
•
Filing: 1957-10-31
•
Granted: 1961-02-14
•
Expires: 1977-10-31
Abstract
No abstract record available.
Inventors
- 👤 Leo C Cunniff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:42
CPC Classifications
G; G01; G01D; G01D9/00; G01D9/02; G01D9/10; G01D9/12; H; H02; H02P; H02P7/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2422873A
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US2870393A
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US2824283A
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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) | 1964-02-14 | 1964-08-15 | 1965-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-14 | 1968-08-15 | 1969-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-14 | 1972-08-15 | 1973-02-14 | $7700.00 | Window Closed / Lapsed |