US2550707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pitchometer support
Assignee: Individual
•
Filing: 1945-09-17
•
Granted: 1951-05-01
•
Expires: 1965-09-17
Abstract
No abstract record available.
Inventors
- 👤 William S Mckinstry
- 👤 William E Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:11
CPC Classifications
G; G01; G01B; G01B5/00; G01B5/20; G01B5/205
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US507047A
Cited
US720844A
Cited
US918190A
Cited
FR632261A
Cited
US1736247A
Cited
US2172368A
Cited
US2132170A
Cited
US2132407A
Cited
US2414777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-30 | 1954-10-30 | 1955-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-30 | 1958-10-30 | 1959-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-30 | 1962-10-30 | 1963-05-01 | $7700.00 | Window Closed / Lapsed |