US3525849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating inserts
Assignee: Individual
•
Filing: 1968-12-19
•
Granted: 1970-08-25
•
Expires: 1988-12-19
Abstract
No abstract record available.
Inventors
- 👤 Richard Bleckmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:59
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/02; H05B3/06; A; A47; A47L; A47L15/00; A47L15/42; A47L15/4285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE1208959B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-08-24 | 1974-02-23 | 1974-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-08-24 | 1978-02-23 | 1978-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-08-24 | 1982-02-23 | 1982-08-25 | $7700.00 | Window Closed / Lapsed |