US3001573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extension tube torch
Assignee: HUNTER
•
Filing: 1957-04-22
•
Granted: 1961-09-26
•
Expires: 1977-04-22
Abstract
No abstract record available.
Inventors
- 👤 Robert H Hunter
- 👤 Abe J Hanje
- 👤 Harris W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:11
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/28; F23D99/00; F23D99/002; F23D99/004; F23D2206/00; F23D2206/0031; F23D2206/0036; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86815; Y10T137/86823
Claims Analysis
Total Claims: 0
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US2473435A
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US2809101A
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US2794447A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |