Patent US3427660A successfully refreshed from Google Patents.
US3427660A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp-on protective hood
Assignee: Bullard Co
•
Filing: 1966-11-03
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Granted: 1969-02-18
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Expires: 1986-11-03
Abstract
No abstract record available.
Inventors
- 👤 Herbert A Raschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:44
CPC Classifications
A; A62; A62B; A62B17/00; A62B17/04; A61; A61F; A61F9/00; A61F9/04; A61F9/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US504880A
Cited
US1872877A
Cited
US2296338A
Cited
US2410593A
Cited
US3114914A
Cited
US3310811A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |