US2750118A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track and road bed construction
Assignee: TRANSP DEV CORP
•
Filing: 1953-02-10
•
Granted: 1956-06-12
•
Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 John A Hastings
- 👤 Weber Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 00:23
CPC Classifications
E; E01; E01B; E01B3/00; E01B3/28; E01B3/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US128120A
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US188617A
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US189381A
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US788570A
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US791772A
Cited
US1024852A
Cited
US969966A
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US948236A
Cited
US1435618A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |