US2828111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plunger reactor
Assignee: EIDP Inc
•
Filing: 1955-05-02
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Granted: 1958-03-25
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Expires: 1975-05-02
Abstract
No abstract record available.
Inventors
- 👤 Lester H Messinger
- 👤 Wilbur L Patton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:09
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/02; B29B7/06; B29B7/08; B29B7/085; B01; B01F; B01F31/00; B01F31/44; B01F31/441; B29B7/22; B29B7/28; B29B7/286; B29B7/74; B29B7/7476; B29B7/7495; B29B7/10; B29B7/18; B29B7/183
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-24 | 1961-09-23 | 1962-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-24 | 1965-09-23 | 1966-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-24 | 1969-09-23 | 1970-03-25 | $7700.00 | Window Closed / Lapsed |