Patent US2834360A successfully refreshed from Google Patents.
US2834360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat operated apparatus
Assignee: ARKLA AIR CONDITIONING Corp
•
Filing: 1956-04-23
•
Granted: 1958-05-13
•
Expires: 1976-04-23
Abstract
No abstract record available.
Inventors
- 👤 Edward M Stubblefield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:42
CPC Classifications
F; F25; F25B; F25B49/00; F25B49/005; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/4456; Y10T137/4643; Y10T137/4666
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1982474A
Cited
US2247566A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |