Patent US3203103A successfully refreshed from Google Patents.
US3203103A
Expired / Lapsed
US
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Universal torsion spring gauge
Assignee: TA ACQUISITION CORP
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Filing: 1961-05-08
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Granted: 1965-08-31
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Expires: 1981-05-08
Abstract
No abstract record available.
Inventors
- 👤 William G Mcelfresh
- 👤 William A Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:46
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/24; G01B5/255
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2899753A
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US1560521A
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US1617937A
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US2086402A
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US2292968A
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US2619731A
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US2853790A
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US2900734A
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US3111773A
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US3108382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |