Patent US2758043A successfully refreshed from Google Patents.
US2758043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unit heat insulation for pipes
Assignee: Individual
•
Filing: 1953-09-14
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Granted: 1956-08-07
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Expires: 1973-09-14
Abstract
No abstract record available.
Inventors
- 👤 Robert E Cryor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:41
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/024; F16L59/06; F16L59/07; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24281; Y10T428/24289
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US510026A
Cited
US1223935A
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US1134475A
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US1726680A
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US1984649A
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US2023985A
Cited
GB467553A
Cited
US2429486A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |