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US2462943A
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Assignee: Individual
•
Filing: 1945-04-06
•
Granted: 1949-03-01
•
Expires: 1965-04-06
Abstract
No abstract record available.
Inventors
- 👤 Campbell George Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:19
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D27/00; B01D27/02; B01D27/04; B01D27/06; B01D27/14; B01D27/146; B01D27/148; Y; Y10; Y10S; Y10S210/00; Y10S210/17
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US661151A
Cited
US886884A
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US2098725A
Cited
US2168124A
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US2093877A
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US2175775A
Cited
US2209180A
Cited
US2379582A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-02-29 | 1952-08-30 | 1953-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-02-29 | 1956-08-30 | 1957-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-02-29 | 1960-08-30 | 1961-03-01 | $7700.00 | Window Closed / Lapsed |