US2083412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for supplying gas
Assignee: Wallace & Tiernan Co Inc
•
Filing: 1934-09-01
•
Granted: 1937-06-08
•
Expires: 1954-09-01
Abstract
No abstract record available.
Inventors
- 👤 Charles F Wallace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:47
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/72; C02F1/76; C02F1/763; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0324; Y10T137/0329; Y10T137/0363; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/2559; Y10T137/2564; Y10T137/2572; Y10T137/8158; Y10T137/8326
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1940-06-07 | 1940-12-07 | 1941-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1944-06-07 | 1944-12-07 | 1945-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1948-06-07 | 1948-12-07 | 1949-06-08 | $7700.00 | Window Closed / Lapsed |