US2872650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Waveguide
Assignee: MONOGRAM PREC IND Inc
•
Filing: 1956-02-16
•
Granted: 1959-02-03
•
Expires: 1976-02-16
Abstract
No abstract record available.
Inventors
- 👤 Richard H Winkler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:17
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2151118A
Cited
US2567748A
Cited
US2653270A
Cited
US2677111A
Cited
US2730678A
Cited
US2800604A
Cited
US2748268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-02 | 1962-08-04 | 1963-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-02 | 1966-08-04 | 1967-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-02 | 1970-08-04 | 1971-02-03 | $7700.00 | Window Closed / Lapsed |