US2216792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas making apparatus
Assignee: Individual
•
Filing: 1937-08-25
•
Granted: 1940-10-08
•
Expires: 1957-08-25
Abstract
No abstract record available.
Inventors
- 👤 Albert R Stryker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:12
CPC Classifications
C; C10; C10J; C10J3/00; C10J3/02; C10J3/20; C10J3/34; C10J3/40; C10J3/42; C10J2300/00; C10J2300/09; C10J2300/0913; C10J2300/093; C10J2300/0936; Y; Y02; Y02P; Y02P20/00; Y02P20/10; Y02P20/129; Y10; Y10S; Y10S48/00; Y10S48/04
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) | 1943-10-08 | 1944-04-08 | 1944-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-10-08 | 1948-04-08 | 1948-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-10-08 | 1952-04-08 | 1952-10-08 | $7700.00 | Window Closed / Lapsed |