Patent US2710787A successfully refreshed from Google Patents.
US2710787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for indicating and recording time intervals
Assignee: NAT SIMPLEX BLUDWORTH Inc
•
Filing: 1952-02-23
•
Granted: 1955-06-14
•
Expires: 1972-02-23
Abstract
No abstract record available.
Inventors
- 👤 Francisco C Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:49
CPC Classifications
G; G01; G01S; G01S1/00; G01S1/72
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2412234A
Cited
US2394286A
Cited
US2406861A
Cited
US2465990A
Cited
US2610244A
Cited
US2597199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-13 | 1958-12-13 | 1959-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-13 | 1962-12-13 | 1963-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-13 | 1966-12-13 | 1967-06-14 | $7700.00 | Window Closed / Lapsed |