US2625929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction heat generator
Assignee: Individual
•
Filing: 1949-10-29
•
Granted: 1953-01-20
•
Expires: 1969-10-29
Abstract
No abstract record available.
Inventors
- 👤 Herbert W Love
- 👤 Monica Sebastian La
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:52
CPC Classifications
F; F24; F24V; F24V40/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE87136C
Cited
DE377818C
Cited
US1126354A
Cited
US1650612A
Cited
GB284824A
Cited
US1758207A
Cited
US1975440A
Cited
US2095017A
Cited
US2090873A
Cited
US2251344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |