US2683565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas control
Assignee: A P CONTROLS Corp
•
Filing: 1950-05-05
•
Granted: 1954-07-13
•
Expires: 1970-05-05
Abstract
No abstract record available.
Inventors
- 👤 Roy W Johnson
- 👤 Lourdes V Mccarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/06; F23N5/067; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/20
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2319685A
Cited
US1762133A
Cited
US1814812A
Cited
US1814935A
Cited
US1814834A
Cited
US1888449A
Cited
US2187834A
Cited
GB496305A
Cited
US2245834A
Cited
US2314266A
Cited
US2451459A
Cited
US2507113A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-07-12 | 1958-01-11 | 1958-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-07-12 | 1962-01-11 | 1962-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-07-12 | 1966-01-11 | 1966-07-13 | $7700.00 | Window Closed / Lapsed |