Patent US1233994A successfully refreshed from Google Patents.
US1233994A
Expired / Lapsed
US
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Machine for taper-forming.
Assignee: Pratt and Whitney Co Inc
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Filing: 1916-03-27
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Granted: 1917-07-17
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Expires: 1936-03-27
Abstract
No abstract record available.
Inventors
- 👤 Richard F Dow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:39
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/10; B23Q35/101; B23Q35/102; Y; Y10; Y10T; Y10T408/00; Y10T408/08; Y10T408/83; Y10T408/85; Y10T82/00; Y10T82/12; Y10T82/125; Y10T82/14; Y10T82/141
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1920-07-16 | 1921-01-15 | 1921-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1924-07-16 | 1925-01-15 | 1925-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1928-07-16 | 1929-01-15 | 1929-07-17 | $7700.00 | Window Closed / Lapsed |