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Patent US3413772A successfully refreshed from Google Patents.
US3413772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring loaded sleeve lug
Assignee: Ridgewood Instrument Co
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Filing: 1966-02-10
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Granted: 1968-12-03
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Expires: 1986-02-10
Abstract
No abstract record available.
Inventors
- 👤 William P Mccarthy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:46
CPC Classifications
E; E04; E04G; E04G17/00; E04G17/02; E04G15/00; E04G15/06; E04G15/061
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1620737A
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US1821083A
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US1767823A
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US1800075A
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US1863381A
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US2191979A
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US2676483A
Cited
GB817489A
Cited
US2919878A
Cited
US3206150A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-03 | 1972-06-03 | 1972-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-03 | 1976-06-03 | 1976-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-03 | 1980-06-03 | 1980-12-03 | $7700.00 | Window Closed / Lapsed |