Patent US138947A successfully refreshed from Google Patents.
Patent US2949953A successfully refreshed from Google Patents.
US2949953A
Expired / Lapsed
US
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Pipe insulator and method of making same
Assignee: Individual
•
Filing: 1955-05-26
•
Granted: 1960-08-23
•
Expires: 1975-05-26
Abstract
No abstract record available.
Inventors
- 👤 Maio Vincent Di
- 👤 Norman T Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:34
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/026; F16L59/14; E; E04; E04B; E04B1/00; E04B1/62; E04B1/74; E04B1/76; E04B2001/7683; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1036; Y10T156/1038; Y10T156/1089; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49879
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US231832A
Cited
US347631A
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US397822A
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US616479A
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US775537A
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US1924472A
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US2373500A
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US2778405A
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US2784129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |