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Patent US2820480A successfully refreshed from Google Patents.
US2820480A
Expired / Lapsed
US
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Encasement for steam pipes or the like and method of making same
Assignee: Individual
•
Filing: 1955-09-09
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Granted: 1958-01-21
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Expires: 1975-09-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Innis O'rourke
- 👤 George S Pinter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:26
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/14; F16L59/15
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1004570A
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US977345A
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US994200A
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US1021082A
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US1083002A
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US1774599A
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US1771167A
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US2153741A
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US2355584A
Cited
US2747249A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |