Patent US3348482A successfully refreshed from Google Patents.
US3348482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Excavating apparatus and method for excavating materials
Assignee: Jet Set Corp
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Filing: 1966-01-03
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Granted: 1967-10-24
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Expires: 1986-01-03
Abstract
No abstract record available.
Inventors
- 👤 Russell W Keener
- 👤 Marsh Peter L De
- 👤 Carlos E Ballard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:39
CPC Classifications
E; E21; E21C; E21C45/00; E21C47/00; E21C47/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A METHOD OF EXCAVATING COMPRISING THE STEPS OF: (A) POSITIONING A PLURALITY OF CIRCULAR SHAPED CHARGES TO DIRECT ENERGY GENERATED ON INITIATION INTO A MATERIAL TO BE EXCAVATED; (B) NONABUTTINGLY ARRANGING SAID SHAPED CHARGES IN A PATTERN RELATIVE TO ONE ANOTHER IN WHICH THE CENTER LINE SPACING BETWEEN ADJACENT SHAPED CHARGES TO DIAMETER OF SHAPED CHARGES DOES NOT EXCEED SEVEN TO ONE;
Claim 2
Independent Claim
62 words
A METHOD OF EXCAVATING COMPRISING THE STEPS OF: (A) POSITIONING A PLURALITY OF CIRCULAR SHAPED CHARGES TO DIRECT ENERGY GENERATED ON INITIATION INTO A MATERIAL TO BE EXCAVATED; (B) NONABUTTINGLY ARRANGING SAID SHAPED CHARGES IN A PATTERN RELATIVE TO ONE ANOTHER IN WHICH THE CENTER LINE SPACING BETWEEN ADJACENT SHAPED CHARGES TO DIAMETER OF SHAPED CHARGES DOES NOT EXCEED SEVEN TO ONE;
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) | 1970-10-23 | 1971-04-24 | 1971-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-23 | 1975-04-24 | 1975-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-23 | 1979-04-24 | 1979-10-24 | $7700.00 | Window Closed / Lapsed |