US2560635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas clearing apparatus
Assignee: Individual
•
Filing: 1948-01-27
•
Granted: 1951-07-17
•
Expires: 1968-01-27
Abstract
No abstract record available.
Inventors
- 👤 Lloyd A Conyers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:24
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; F01N3/08; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US700859A
Cited
US1047534A
Cited
US2103521A
Cited
US2080713A
Cited
US2090994A
Cited
US2311155A
Cited
US2253261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |