US2736906A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drain opener
Assignee: Individual
•
Filing: 1954-06-10
•
Granted: 1956-03-06
•
Expires: 1974-06-10
Abstract
No abstract record available.
Inventors
- 👤 Walter G Ramseur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:28
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/30; E03C1/304; E03C1/306
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1101819A
Cited
US1684880A
Cited
US1917553A
Cited
US2086149A
Cited
US2195830A
Cited
US2203185A
Cited
US2535092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-06 | 1959-09-05 | 1960-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-06 | 1963-09-05 | 1964-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-06 | 1967-09-05 | 1968-03-06 | $7700.00 | Window Closed / Lapsed |