Patent US2789793A successfully refreshed from Google Patents.
US2789793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating connecting plate for rotary preheater
Assignee: Alstom Power Inc
•
Filing: 1952-11-14
•
Granted: 1957-04-23
•
Expires: 1972-11-14
Abstract
No abstract record available.
Inventors
- 👤 Theoclitus Gregory
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:08
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1716132A
Cited
US1891607A
Cited
US2010930A
Cited
US2229691A
Cited
GB500682A
Cited
US2337956A
Cited
US2361692A
Cited
US2549583A
Cited
US2468826A
Cited
US2480277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-04-22 | 1960-10-22 | 1961-04-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-04-22 | 1964-10-22 | 1965-04-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-04-22 | 1968-10-22 | 1969-04-23 | $7700.00 | Window Closed / Lapsed |