US2763871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sanitary toilet for railway cars
Assignee: Vapor Heating Corp
•
Filing: 1953-05-25
•
Granted: 1956-09-25
•
Expires: 1973-05-25
Abstract
No abstract record available.
Inventors
- 👤 Frost B Rutherford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:44
CPC Classifications
B; B61; B61D; B61D35/00; B61D35/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1327275A
Cited
GB171474A
Cited
US1898656A
Cited
US2258453A
Cited
US2219044A
Cited
US2605478A
Cited
US2675562A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |