US2611911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Escapement mechanism
Assignee: Graham Manufacturing Corp
•
Filing: 1949-12-15
•
Granted: 1952-09-30
•
Expires: 1969-12-15
Abstract
No abstract record available.
Inventors
- 👤 Harold J Graham
- 👤 Paul F Powder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:11
CPC Classifications
G; G04; G04D; G04D1/00; G04D1/0078; B; B23; B23P; B23P19/00; B23P19/001; B23P19/003; B23Q; B23Q7/00; B23Q7/10; B23Q7/106
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-30 | 1956-03-31 | 1956-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-30 | 1960-03-31 | 1960-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-30 | 1964-03-31 | 1964-09-30 | $7700.00 | Window Closed / Lapsed |