US2863471A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportioner
Assignee: Individual
•
Filing: 1955-10-11
•
Granted: 1958-12-09
•
Expires: 1975-10-11
Abstract
No abstract record available.
Inventors
- 👤 Benjamin H Thurman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:02
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/12; F04B13/00; F04B49/16; F04B53/00; F04B53/16; F04B53/162; F04B53/166; F04B7/00; F04B7/0042; F04B7/0053; G; G05; G05D; G05D11/00; G05D11/008; F05; F05C; F05C2203/00; F05C2203/08; F05C2203/0804; F05C2203/0856; F05C2203/086; F05C2225/00; F05C2225/06; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2531
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2009622A
Cited
US2059145A
Cited
US2024480A
Cited
US2164019A
Cited
US2259713A
Cited
US2348958A
Cited
US2548738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |