US1905900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for vapor recovery
Assignee: Roessler and Hasslacher Chemical Co
•
Filing: 1931-04-21
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Granted: 1933-04-25
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Expires: 1951-04-21
Abstract
No abstract record available.
Inventors
- 👤 Carlisle Paul Johnson
- 👤 Raleigh P Ward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:51
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D2253/00; B01D2253/10; B01D2253/104; B01D2257/00; B01D2257/20; B01D2257/206; B01D2257/2064; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40088; B01D2259/4009
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) | 1936-04-24 | 1936-10-24 | 1937-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1940-04-24 | 1940-10-24 | 1941-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1944-04-24 | 1944-10-24 | 1945-04-25 | $7700.00 | Window Closed / Lapsed |