US2952883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: KEWANEE Manufacturing CO
•
Filing: 1956-08-03
•
Granted: 1960-09-20
•
Expires: 1976-08-03
Abstract
No abstract record available.
Inventors
- 👤 Kessler Ward Philson
- 👤 John P Malmrose
- 👤 Rupert L Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:28
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/32; E06B3/34; E06B3/42; E06B3/46; E06B3/4609; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1075; Y10T292/1083
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-09-20 | 1964-03-21 | 1964-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-20 | 1968-03-21 | 1968-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-20 | 1972-03-21 | 1972-09-20 | $7700.00 | Window Closed / Lapsed |