US1168368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubular heat-exchanging apparatus.
Assignee: Schutte and Koerting Co
•
Filing: 1914-11-12
•
Granted: 1916-01-18
•
Expires: 1934-11-12
Abstract
No abstract record available.
Inventors
- 👤 Hans Zimmermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:29
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/001; Y; Y10; Y10S; Y10S165/00; Y10S165/051; Y10S165/052; Y10S165/053; Y10S165/058
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) | 1919-01-17 | 1919-07-19 | 1920-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1923-01-17 | 1923-07-19 | 1924-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1927-01-17 | 1927-07-19 | 1928-01-18 | $7700.00 | Window Closed / Lapsed |