US2713905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perforating device
Assignee: Individual
•
Filing: 1952-02-08
•
Granted: 1955-07-26
•
Expires: 1972-02-08
Abstract
No abstract record available.
Inventors
- 👤 Augustus J Hartley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:21
CPC Classifications
B; B26; B26F; B26F1/00; B26F1/32
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US430299A
Cited
US722559A
Cited
US1171422A
Cited
US2083476A
Cited
US2307281A
Cited
US2595347A
Cited
US2566738A
Cited
FR995932A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-07-25 | 1959-01-24 | 1959-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-07-25 | 1963-01-24 | 1963-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-07-25 | 1967-01-24 | 1967-07-26 | $7700.00 | Window Closed / Lapsed |