US1125416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-controlled damper for heater-pipes.
Assignee: Individual
•
Filing: 1914-06-10
•
Granted: 1915-01-19
•
Expires: 1934-06-10
Abstract
No abstract record available.
Inventors
- 👤 David S Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:01
CPC Classifications
A; A62; A62C; A62C2/00; A62C2/06; A62C2/12; A62C2/14; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797
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) | 1918-01-18 | 1918-07-20 | 1919-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-01-18 | 1922-07-20 | 1923-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-01-18 | 1926-07-20 | 1927-01-19 | $7700.00 | Window Closed / Lapsed |