Patent US3546812A successfully refreshed from Google Patents.
US1133089A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic means for operating hot-air registers.
Assignee: Individual
•
Filing: 1914-07-07
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Granted: 1915-03-23
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Expires: 1934-07-07
Abstract
No abstract record available.
Inventors
- 👤 Albert P Broomell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:23
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/275; G05D23/1927; G05D23/193; G05D23/1931
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) | 1918-03-22 | 1918-09-21 | 1919-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1922-03-22 | 1922-09-21 | 1923-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1926-03-22 | 1926-09-21 | 1927-03-23 | $7700.00 | Window Closed / Lapsed |