Patent US2888248A successfully refreshed from Google Patents.
US2888248A
Expired / Lapsed
US
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Rotary regenerator seal
Assignee: Motors Liquidation Co
•
Filing: 1956-07-05
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Granted: 1959-05-26
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Expires: 1976-07-05
Abstract
No abstract record available.
Inventors
- 👤 William C Bubniak
- 👤 Paul T Vickers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:48
CPC Classifications
F; F28; F28D; F28D19/00; F28D19/04; F28D19/047; Y; Y10; Y10S; Y10S165/00; Y10S165/009; Y10S165/013; Y10S165/016; Y10S165/02; Y10S165/021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2747843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |