US3474551A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mobile grave excavator
Assignee: GUY C PEARSON
•
Filing: 1966-08-05
•
Granted: 1969-10-28
•
Expires: 1986-08-05
Abstract
No abstract record available.
Inventors
- 👤 Guy C Pearson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:54
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/08; E02F3/086; E02F3/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US587697A
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US716124A
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US797503A
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US1050361A
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US1224323A
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US1691809A
Cited
US2653795A
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US2884721A
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US2998891A
Cited
US3015175A
Cited
US3107444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |