US1320071A
Expired / Lapsed
US
⏱️ 0.0 years remaining
furnace regulator system
Assignee: —
•
Filing: —
•
Granted: 1919-10-28
•
Expires: 1936-10-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:24
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/0019
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) | 1922-10-27 | 1923-04-28 | 1923-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-10-27 | 1927-04-28 | 1927-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-10-27 | 1931-04-28 | 1931-10-28 | $7700.00 | Window Closed / Lapsed |