US2429888A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of replacing tubes in heat exchangers
Assignee: Garrett Corp
•
Filing: 1944-02-14
•
Granted: 1947-10-28
•
Expires: 1964-02-14
Abstract
No abstract record available.
Inventors
- 👤 Henry G Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:04
CPC Classifications
B; B25; B25B; B25B27/00; B23; B23K; B23K1/00; B23K1/0008; B23K1/0012; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49352; Y10T29/49718; Y10T29/49721; Y10T29/4973; Y10T29/49815; Y10T29/49821
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-10-27 | 1951-04-28 | 1951-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-10-27 | 1955-04-28 | 1955-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-10-27 | 1959-04-28 | 1959-10-28 | $7700.00 | Window Closed / Lapsed |