US1428349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating device
Assignee: Individual
•
Filing: 1922-02-17
•
Granted: 1922-09-05
•
Expires: 1942-02-17
Abstract
No abstract record available.
Inventors
- 👤 Martin J Whelan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:07
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; H05B3/78; H05B3/82
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) | 1925-09-04 | 1926-03-06 | 1926-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1929-09-04 | 1930-03-06 | 1930-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1933-09-04 | 1934-03-06 | 1934-09-05 | $7700.00 | Window Closed / Lapsed |