Patent US2833271A successfully refreshed from Google Patents.
US2833271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater for tool handles
Assignee: Individual
•
Filing: 1955-06-01
•
Granted: 1958-05-06
•
Expires: 1975-06-01
Abstract
No abstract record available.
Inventors
- 👤 Barber Clyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:57
CPC Classifications
B; B25; B25G; B25G1/00; F; F23; F23D; F23D11/00; F23D11/36; F23D11/44; F23D2900/00; F23D2900/31023
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US835150A
Cited
US1179938A
Cited
GB366362A
Cited
CH164760A
Cited
US2005476A
Cited
US2579620A
Cited
US2527541A
Cited
US2651137A
Cited
US2758592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |