US2587252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming wire filling for regenerators
Assignee: Hartford National Bank and Trust Co
•
Filing: 1945-08-29
•
Granted: 1952-02-26
•
Expires: 1965-08-29
Abstract
No abstract record available.
Inventors
- 👤 Franciscus Lambertus Va Weenen
- 👤 Brey Heinrich De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:51
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/057; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4935; Y10T29/49357
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US15771A
Cited
US30306A
Cited
US30700A
Cited
US206597A
Cited
US939839A
Cited
US1745426A
Cited
US1694939A
Cited
US2245840A
Cited
US2276572A
Cited
US2334263A
Cited
US2354395A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-25 | 1955-08-27 | 1956-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-25 | 1959-08-27 | 1960-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-25 | 1963-08-27 | 1964-02-26 | $7700.00 | Window Closed / Lapsed |