US3462809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: DHJ Industries Inc
•
Filing: 1968-02-09
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Granted: 1969-08-26
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Expires: 1988-02-09
Abstract
No abstract record available.
Inventors
- 👤 Monroe Froehlich Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:33
CPC Classifications
A; A44; A44B; A44B99/00; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44641; Y10T24/44769; Y10T24/44906; Y10T24/44915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1713533A
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US2378747A
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US2453993A
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US2653369A
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US2652612A
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US3119163A
Cited
US3325929A
Cited
US3298073A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-25 | 1973-02-24 | 1973-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-25 | 1977-02-24 | 1977-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-25 | 1981-02-24 | 1981-08-26 | $7700.00 | Window Closed / Lapsed |