US1313730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gilled heat-interchanging apparatus.
Assignee: Individual
•
Filing: 1917-04-06
•
Granted: 1919-08-19
•
Expires: 1937-04-06
Abstract
No abstract record available.
Inventors
- 👤 Edward Lloyd Pease
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:09
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0308; F28F; F28F3/00; F28F3/02; Y; Y10; Y10S; Y10S165/00; Y10S165/355; Y10S165/442; Y10S165/452; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49377; Y10T29/49378
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) | 1922-08-18 | 1923-02-17 | 1923-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-08-18 | 1927-02-17 | 1927-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-08-18 | 1931-02-17 | 1931-08-19 | $7700.00 | Window Closed / Lapsed |