US1326618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating means for mineral oils.
Assignee: Individual
•
Filing: 1919-02-12
•
Granted: 1919-12-30
•
Expires: 1939-02-12
Abstract
No abstract record available.
Inventors
- 👤 William P Strother
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:39
CPC Classifications
B; B01; B01D; B01D17/00; B01D17/02; B01D17/0208
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) | 1922-12-29 | 1923-06-30 | 1923-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1926-12-29 | 1927-06-30 | 1927-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1930-12-29 | 1931-06-30 | 1931-12-30 | $7700.00 | Window Closed / Lapsed |