US3367529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: JOHN MERSHON WELCH
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Filing: 1965-11-29
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Granted: 1968-02-06
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Expires: 1985-11-29
Abstract
No abstract record available.
Inventors
- 👤 Welch John Mershon
- 👤 Watkins William Le Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:03
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/42; A47L15/50; A47L15/501; A47J; A47J47/00; A47J47/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |