US2938437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface drainage receivers
Assignee: Individual
•
Filing: 1958-05-22
•
Granted: 1960-05-31
•
Expires: 1978-05-22
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Daley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:51
CPC Classifications
E; E03; E03F; E03F5/00; E03F5/04; E03F5/046; Y; Y10; Y10T; Y10T137/00; Y10T137/4456; Y10T137/4463; Y10T137/4523; Y10T137/5109
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US196631A
Cited
US245721A
Cited
US468141A
Cited
US623198A
Cited
US834784A
Cited
US1652702A
Cited
US2518620A
Cited
GB721012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-31 | 1963-11-30 | 1964-05-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-31 | 1967-11-30 | 1968-05-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-31 | 1971-11-30 | 1972-05-31 | $7700.00 | Window Closed / Lapsed |