US1537016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recuperator
Assignee: Individual
•
Filing: 1924-11-05
•
Granted: 1925-05-05
•
Expires: 1944-11-05
Abstract
No abstract record available.
Inventors
- 👤 Kroyer Sigurd Hjalmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:33
CPC Classifications
F; F28; F28F; F28F1/00; F28F1/02; F28F1/04; F28D; F28D21/00; F28D21/0001; F28D21/0003; Y; Y10; Y10S; Y10S165/00; Y10S165/327; Y10S165/337; Y10S165/341
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) | 1928-05-04 | 1928-11-03 | 1929-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1932-05-04 | 1932-11-03 | 1933-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1936-05-04 | 1936-11-03 | 1937-05-05 | $7700.00 | Window Closed / Lapsed |