US2827709A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal gaging apparatus
Assignee: AT&T Inc
•
Filing: 1955-11-01
•
Granted: 1958-03-25
•
Expires: 1975-11-01
Abstract
No abstract record available.
Inventors
- 👤 Harry W Clifford
- 👤 Albert W Kayle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:47
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US914855A
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GB190901797A
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US1981153A
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US2083373A
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US2268579A
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GB549737A
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US2504961A
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US2436537A
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US2659158A
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US2553574A
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US2657468A
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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) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |