Patent US2825673A successfully refreshed from Google Patents.
US2825673A
Expired / Lapsed
US
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Thermal insulating covering for a pipe
Assignee: Individual
•
Filing: 1955-04-27
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Granted: 1958-03-04
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Expires: 1975-04-27
Abstract
No abstract record available.
Inventors
- 👤 Tschappu Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 07:01
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/02; F16L59/021; F16L59/022; F16L59/026; Y; Y10; Y10S; Y10S174/00; Y10S174/11; Y10T; Y10T428/00; Y10T428/24; Y10T428/24008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |