Patent US3521842A successfully refreshed from Google Patents.
US3521842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring clamp for mounting conduit on a channel support
Assignee: Lamb Technicon Corp
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Filing: 1968-05-06
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Granted: 1970-07-28
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Expires: 1988-05-06
Abstract
No abstract record available.
Inventors
- 👤 Orval A Opperthauser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:52
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/20; F16B2/22; F16B2/24; F16B2/248; F16L; F16L3/00; F16L3/24; F16L3/243; F16L3/2431
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB556847A
Cited
US2541908A
Cited
US2636704A
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US2674431A
Cited
US2729412A
Cited
US2918240A
Cited
US3266761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-07-27 | 1974-01-26 | 1974-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-07-27 | 1978-01-26 | 1978-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-07-27 | 1982-01-26 | 1982-07-28 | $7700.00 | Window Closed / Lapsed |