Patent EP0079101A2 successfully refreshed from Google Patents.
US1776162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat regenerator
Assignee: Individual
•
Filing: 1923-04-09
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Granted: 1930-09-16
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Expires: 1943-04-09
Abstract
No abstract record available.
Inventors
- 👤 Martinka Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:26
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/057
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) | 1933-09-15 | 1934-03-17 | 1934-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1937-09-15 | 1938-03-17 | 1938-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1941-09-15 | 1942-03-17 | 1942-09-16 | $7700.00 | Window Closed / Lapsed |