Patent US2748797A successfully refreshed from Google Patents.
US2748797A
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Pneumatic time-delay fuse
Assignee: Specialties Development Corp
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Filing: 1951-11-08
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Granted: 1956-06-05
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Expires: 1971-11-08
Abstract
No abstract record available.
Inventors
- 👤 Edward J Heizer
- 👤 Wallis C Axt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:05
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/20; F41; F41A; F41A7/00; F41A7/02; F41A7/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7504; Y10T137/7613; Y10T137/7722; Y10T137/7781; Y10T137/7835; Y10T137/7836; Y10T137/7837; Y10T137/7847; Y10T137/7848; Y10T137/8593; Y10T137/87917; Y10T137/88054
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US842279A
Cited
US1035803A
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US1501331A
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US1725884A
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US2025076A
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US2486133A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-05 | 1959-12-05 | 1960-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-05 | 1963-12-05 | 1964-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-05 | 1967-12-05 | 1968-06-05 | $7700.00 | Window Closed / Lapsed |