US932711A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature-regulating system.
Assignee: Individual
•
Filing: 1909-03-17
•
Granted: 1909-08-31
•
Expires: 1929-03-17
Abstract
No abstract record available.
Inventors
- 👤 Charles D Knight
- 👤 Walter O Lum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:30
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
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) | 1912-08-30 | 1913-03-01 | 1913-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1916-08-30 | 1917-03-01 | 1917-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1920-08-30 | 1921-03-01 | 1921-08-31 | $7700.00 | Window Closed / Lapsed |