Patent US2852652A successfully refreshed from Google Patents.
US2852652A
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Heat wrench
Assignee: Orenda Engines Ltd
•
Filing: 1957-06-14
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Granted: 1958-09-16
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Expires: 1977-06-14
Abstract
No abstract record available.
Inventors
- 👤 Rose Desmond Griffith
- 👤 Booth Peter Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:46
CPC Classifications
B; B23; B23P; B23P19/00; B23P19/04; B23P19/06; B23P19/067; B23P19/068; B25; B25B; B25B13/00; B25B13/48; B25B29/00; B25B29/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49865; Y10T29/53; Y10T29/53687
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1458956A
Cited
US1839850A
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US2176601A
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US2306709A
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US2611066A
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US2717300A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-15 | 1962-03-17 | 1962-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-15 | 1966-03-17 | 1966-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-15 | 1970-03-17 | 1970-09-16 | $7700.00 | Window Closed / Lapsed |