US2962974A
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US
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Assignee: THOMAS K HAMPTON
•
Filing: 1959-07-24
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Granted: 1960-12-06
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Expires: 1979-07-24
Abstract
No abstract record available.
Inventors
- 👤 Lloyd G Porkert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/08; F02; F02M; F02M59/00; F04B43/0009; F04B43/0045; F04B43/0054; F04B9/00; F04B9/02; F04B9/04; F04B9/042; F02M2700/00; F02M2700/13; F02M2700/1317; Y; Y10; Y10S; Y10S74/00; Y10S74/10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18088; Y10T74/18128; Y10T74/18136
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1639623A
Cited
US2894459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-06 | 1964-06-06 | 1964-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-06 | 1968-06-06 | 1968-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-06 | 1972-06-06 | 1972-12-06 | $7700.00 | Window Closed / Lapsed |