Patent US2471611A successfully refreshed from Google Patents.
US2471611A
Expired / Lapsed
US
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Pipe clamp
Assignee: Individual
•
Filing: 1945-06-11
•
Granted: 1949-05-31
•
Expires: 1965-06-11
Abstract
No abstract record available.
Inventors
- 👤 Peter G Damstra
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:02
CPC Classifications
F; F16; F16L; F16L3/00; F16L3/24; F16L3/243; Y; Y10; Y10T; Y10T403/00; Y10T403/71; Y10T403/7123
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US430623A
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US257891A
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US974462A
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US1071617A
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US1663356A
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GB330115A
Cited
GB381775A
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US2026260A
Cited
US2080916A
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US2191258A
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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) | 1952-05-30 | 1952-11-29 | 1953-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-30 | 1956-11-29 | 1957-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-30 | 1960-11-29 | 1961-05-31 | $7700.00 | Window Closed / Lapsed |