US2656902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated heat conducting unit
Assignee: Individual
•
Filing: 1951-05-01
•
Granted: 1953-10-27
•
Expires: 1971-05-01
Abstract
No abstract record available.
Inventors
- 👤 William W Gotshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:55
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/12; Y; Y10; Y10S; Y10S411/00; Y10S411/918; Y10T; Y10T428/00; Y10T428/24; Y10T428/24025
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) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |