US1468561A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tank heater
Assignee: Individual
•
Filing: 1920-08-07
•
Granted: 1923-09-18
•
Expires: 1940-08-07
Abstract
No abstract record available.
Inventors
- 👤 Hardy A Friend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:58
CPC Classifications
A; A01; A01K; A01K7/00; A01K7/02; A01K7/027; F; F24; F24H; F24H1/00; F24H1/18; F24H1/20; F24H1/205
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) | 1926-09-17 | 1927-03-19 | 1927-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-09-17 | 1931-03-19 | 1931-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-09-17 | 1935-03-19 | 1935-09-18 | $7700.00 | Window Closed / Lapsed |