US1916549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat transferring unit
Assignee: Individual
•
Filing: 1932-11-14
•
Granted: 1933-07-04
•
Expires: 1952-11-14
Abstract
No abstract record available.
Inventors
- 👤 Fred M Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:06
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/0535; B; B60; B60H; B60H1/00; B60H1/00321; B60H1/00328; F28D2001/0253; F28D2001/026; F28D2001/0266; F28D21/00; F28D2021/0019; F28D2021/008; F28D2021/0091; F28D2021/0096
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1936-07-03 | 1937-01-02 | 1937-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-07-03 | 1941-01-02 | 1941-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-07-03 | 1945-01-02 | 1945-07-04 | $7700.00 | Window Closed / Lapsed |