US2833215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gun perforator and method of manufacture
Assignee: JOHN D CHESNUT
•
Filing: 1951-08-18
•
Granted: 1958-05-06
•
Expires: 1971-08-18
Abstract
No abstract record available.
Inventors
- 👤 Spencer Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:31
CPC Classifications
F; F42; F42B; F42B3/00; F42B3/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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GB618618A
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US2605704A
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US2543057A
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US2587244A
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US2669928A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-05 | 1961-11-04 | 1962-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-05 | 1965-11-04 | 1966-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-05 | 1969-11-04 | 1970-05-06 | $7700.00 | Window Closed / Lapsed |