US2896933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable heater
Assignee: MASTER VIBRATOR CO
•
Filing: 1953-04-23
•
Granted: 1959-07-28
•
Expires: 1973-04-23
Abstract
No abstract record available.
Inventors
- 👤 Barnes Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:14
CPC Classifications
F; F24; F24H; F24H3/00; F24H3/02; F24H3/04; F24H3/0488; Y; Y02; Y02B; Y02B30/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1863391A
Cited
US2018505A
Cited
US2164954A
Cited
US2386807A
Cited
US2525206A
Cited
US2541332A
Cited
GB662785A
Cited
US2609040A
Cited
US2606014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-07-27 | 1963-01-26 | 1963-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-07-27 | 1967-01-26 | 1967-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-07-27 | 1971-01-26 | 1971-07-28 | $7700.00 | Window Closed / Lapsed |