Patent US2828673A successfully refreshed from Google Patents.
US2828673A
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US
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Machine tool
Assignee: Pratt and Whitney Co Inc
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Filing: 1954-03-04
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Granted: 1958-04-01
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Expires: 1974-03-04
Abstract
No abstract record available.
Inventors
- 👤 Paul J Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:34
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/127; B23Q35/129; B23Q2735/00; B23Q2735/02; B23Q2735/06; B23Q2735/065; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/301176; Y10T409/301624; Y10T409/30168; Y10T409/301904; Y10T409/30196
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2120196A
Cited
US2221459A
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US2162491A
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US2331337A
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US2354391A
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US2373332A
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US2677310A
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US2704012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-31 | 1961-09-30 | 1962-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-31 | 1965-09-30 | 1966-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-31 | 1969-09-30 | 1970-04-01 | $7700.00 | Window Closed / Lapsed |