US2797672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stroke-cycle internal combustion engine
Assignee: TECHNICAL ENGINEERING SERVICE
•
Filing: 1953-10-23
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Granted: 1957-07-02
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Expires: 1973-10-23
Abstract
No abstract record available.
Inventors
- 👤 William J Waterhouse
- 👤 Wallace H Mclauchlan
- 👤 Armand W Claverie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:09
CPC Classifications
F; F02; F02B; F02B67/00; F02B67/10; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19535
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1342483A
Cited
US792615A
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US888374A
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US976858A
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US1022178A
Cited
US1021697A
Cited
FR483214A
Cited
US1299895A
Cited
US1745824A
Cited
US2189106A
Cited
US2270546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-01 | 1960-12-31 | 1961-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-01 | 1964-12-31 | 1965-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-01 | 1968-12-31 | 1969-07-02 | $7700.00 | Window Closed / Lapsed |