Patent US3118145A successfully refreshed from Google Patents.
US3118145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier powered paging system
Assignee: Individual
•
Filing: 1960-01-11
•
Granted: 1964-01-14
•
Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 Gilbert C Nee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:04
CPC Classifications
G; G08; G08B; G08B3/00; G08B3/10; G08B3/1008; G08B3/1016; G08B3/1025; G08B3/1066
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
120 words
IN A PAGING SYSTEM, A CENTRAL STATION FOR TRANSMITTING PAGING SIGNALS HAVING A PLURALITY OF MODULATION FREQUENCIES AND A PLURALITY OF SIGNAL CARRIER FREQUENCIES, TRANSMITTER MEANS AT SAID CENTRAL STATION ADAPTED FOR RADIATING CARRIER ENERGY AT A PLURALITY OF SELECTABLE POWER CARRIER FREQUENCIES, A PLURALITY OF RECEIVERS EACH ADAPTED TO PROVIDE AN AUDIBLE PAGING SIGNAL IN RESPONSE TO ONLY A SINGLE COMBINATION OF ONE OF SAID PLURALITY OF MODULATION FREQUENCIES, ONE OF SAID PLURALITY OF SIGNAL CARRIER FREQUENCIES; AND SELECTOR MEANS AT SAID CENTRAL STATION FOR SELECTING THE COMBINATION OF MODULATION FREQUENCY, SIGNAL CARRIER FREQUENCY, AND POWER CARRIER FREQUENCY IN ORDER TO RENDER ONLY A SELECTED ONE OF SAID PLURALITY OF RECEIVERS OPERATIVE AND THEREBY PRODUCE SAID AUDIBLE PAGING SIGNAL.
References Cited (Backward Citations)
US2899547A
Cited
US2480338A
Cited
US2523315A
Cited
US2851592A
Cited
US2777057A
Cited
GB788099A
Cited
US2918573A
Cited
US2912574A
Cited
US2997535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-01-13 | 1967-07-15 | 1968-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-13 | 1971-07-15 | 1972-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-13 | 1975-07-15 | 1976-01-14 | $7700.00 | Window Closed / Lapsed |