Patent US1611354A successfully refreshed from Google Patents.
US3496942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for internal use
Assignee: DARRELL R SHIPLEY
•
Filing: 1968-03-01
•
Granted: 1970-02-24
•
Expires: 1988-03-01
Abstract
No abstract record available.
Inventors
- 👤 Darrell R Shipley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:31
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/12; A61F7/123; A61B; A61B17/00; A61B17/22; A61B2017/22051; A61B2017/22052; A61B18/00; A61B2018/00053; A61B2018/00059; A61B2018/00089; A61B2018/00101; A61F2007/0001; A61F2007/0018; A61F2007/0028; A61F2007/0054
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-23 | 1973-08-25 | 1974-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-23 | 1977-08-25 | 1978-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-23 | 1981-08-25 | 1982-02-24 | $7700.00 | Window Closed / Lapsed |